diff --git a/COPYING.LESSER b/COPYING.LESSER
new file mode 100644
index 0000000..0a04128
--- /dev/null
+++ b/COPYING.LESSER
@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/README.md b/README.md
index c2891b8..a0e8f8b 100644
--- a/README.md
+++ b/README.md
@@ -58,13 +58,12 @@ You can play most of the games at [itch.io](https://dos.itch.io).
 
 ## License
 
-The engine is available under the terms of GNU General Public License 3.0 or later.
+The engine is available under the terms of GNU Lesser General Public License 3.0
+or later.
 
 ## Contributing
 
-Make sure to read the [code style guide](README_codestyle.md). By contributing,
-you agree to eventually relicense the code under the terms of GNU Lesser General
-Public License 3.0 or later.
+Make sure to read the [code style guide](README_codestyle.md).
 
 ## Disclaimer
 
diff --git a/src/character.c b/src/character.c
index 8c043cf..b25742b 100644
--- a/src/character.c
+++ b/src/character.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/character.h b/src/character.h
index c3b77e5..99359ec 100644
--- a/src/character.h
+++ b/src/character.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_CHARACTER_H
diff --git a/src/config.c b/src/config.c
index 942c16c..e630ebc 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/config.h b/src/config.h
index af0e1f7..d7fc5c3 100644
--- a/src/config.h
+++ b/src/config.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_CONFIG_H
diff --git a/src/emscripten-audio-stream.c b/src/emscripten-audio-stream.c
index b0f5e54..cc3d235 100644
--- a/src/emscripten-audio-stream.c
+++ b/src/emscripten-audio-stream.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/emscripten-audio-stream.h b/src/emscripten-audio-stream.h
index 09b3645..c22ec89 100644
--- a/src/emscripten-audio-stream.h
+++ b/src/emscripten-audio-stream.h
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 /// \privatesection
diff --git a/src/gamestate.c b/src/gamestate.c
index 3b5c08c..e39d975 100644
--- a/src/gamestate.c
+++ b/src/gamestate.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/gamestate.h b/src/gamestate.h
index 1e40712..9f290b5 100644
--- a/src/gamestate.h
+++ b/src/gamestate.h
@@ -4,19 +4,24 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
+
 #ifndef LIBSUPERDERPY_GAMESTATE_H
 #define LIBSUPERDERPY_GAMESTATE_H
 
diff --git a/src/gamestates-constructor.c.in b/src/gamestates-constructor.c.in
index 5cebeb5..d546246 100644
--- a/src/gamestates-constructor.c.in
+++ b/src/gamestates-constructor.c.in
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include <libsuperderpy.h>
diff --git a/src/gamestates-force-inclusion.c b/src/gamestates-force-inclusion.c
index 59d41ed..8912518 100644
--- a/src/gamestates-force-inclusion.c
+++ b/src/gamestates-force-inclusion.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/gamestates-stub.c.in b/src/gamestates-stub.c.in
index c28e05a..2d6d63d 100644
--- a/src/gamestates-stub.c.in
+++ b/src/gamestates-stub.c.in
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #define GAMESTATES_STUB_CONCAT_STR(x, y) x##y
diff --git a/src/internal.c b/src/internal.c
index 603315f..9706de8 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -1,18 +1,20 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
  *
  * Also, ponies.
  */
diff --git a/src/internal.h b/src/internal.h
index ce163b4..4de796b 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -1,19 +1,24 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
+
 /// \privatesection
 
 #ifndef LIBSUPERDERPY_INTERNAL_H
diff --git a/src/libsuperderpy.c b/src/libsuperderpy.c
index bf93e25..c82a1d3 100644
--- a/src/libsuperderpy.c
+++ b/src/libsuperderpy.c
@@ -1,21 +1,24 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
  *
  * Also, ponies.
  */
+
 #ifdef LIBSUPERDERPY_MOUSE_EMULATION
 #define ALLEGRO_UNSTABLE
 #endif
diff --git a/src/libsuperderpy.h b/src/libsuperderpy.h
index 0e170a9..5bcd2cb 100644
--- a/src/libsuperderpy.h
+++ b/src/libsuperderpy.h
@@ -6,19 +6,24 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
+
 #ifndef LIBSUPERDERPY_MAIN_H
 #define LIBSUPERDERPY_MAIN_H
 
diff --git a/src/mainloop.c b/src/mainloop.c
index 0050932..4be18dc 100644
--- a/src/mainloop.c
+++ b/src/mainloop.c
@@ -1,18 +1,20 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
  *
  * Also, ponies.
  */
@@ -117,7 +119,7 @@ static inline bool HandleEvent(struct Game* game, ALLEGRO_EVENT* ev) {
 #elif defined(ALLEGRO_WITH_XWINDOWS)
 			if (true) {
 #else
-			if (false) {
+		if (false) {
 #endif
 				// XBox pads on GNU/Linux have messed up stick/axis ordering
 				if (ev->joystick.axis == 0) {
diff --git a/src/mainloop.h b/src/mainloop.h
index 163503f..be44541 100644
--- a/src/mainloop.h
+++ b/src/mainloop.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_MAINLOOP_H
diff --git a/src/maths.c b/src/maths.c
index 4430608..ce3cd81 100644
--- a/src/maths.c
+++ b/src/maths.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/maths.h b/src/maths.h
index ece7958..67b2156 100644
--- a/src/maths.h
+++ b/src/maths.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_MATHS_H
diff --git a/src/particle.c b/src/particle.c
index 83149ba..aa97b91 100644
--- a/src/particle.c
+++ b/src/particle.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/particle.h b/src/particle.h
index 6ba07a4..ace5b33 100644
--- a/src/particle.h
+++ b/src/particle.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_PARTICLE_H
diff --git a/src/shader.c b/src/shader.c
index 772a1df..d8c97d6 100644
--- a/src/shader.c
+++ b/src/shader.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
@@ -24,16 +28,16 @@ static ALLEGRO_USTR* GetShaderSource(struct Game* game, const char* filename) {
 		return NULL;
 	}
 
-	// Use GLSL 1.20 (GL 2.1) and GLSL ES 1.00 (GLES 2.0)
-	// We need to use 120 for GL because non-core GL profile on macOS is limited to 2.1
-	// Even when ignoring macOS, the highest possible option right now is GLSL 1.30, because
-	// most Mesa drivers implement only OpenGL 3.0 on compatibility profile.
-	// TODO: upgrade to GLSL 1.50 (GL 3.2, highest possible on macOS) once Allegro works on core profiles
-	#ifndef __vita__
+// Use GLSL 1.20 (GL 2.1) and GLSL ES 1.00 (GLES 2.0)
+// We need to use 120 for GL because non-core GL profile on macOS is limited to 2.1
+// Even when ignoring macOS, the highest possible option right now is GLSL 1.30, because
+// most Mesa drivers implement only OpenGL 3.0 on compatibility profile.
+// TODO: upgrade to GLSL 1.50 (GL 3.2, highest possible on macOS) once Allegro works on core profiles
+#ifndef __vita__
 	ALLEGRO_USTR* str = al_ustr_new(al_get_opengl_variant() == ALLEGRO_OPENGL_ES ? "#version 100\n" : "#version 120\n");
-	#else
+#else
 	ALLEGRO_USTR* str = al_ustr_new("");
-	#endif
+#endif
 
 	while (true) {
 		char buf[512];
diff --git a/src/shader.h b/src/shader.h
index 06629fb..8989d6f 100644
--- a/src/shader.h
+++ b/src/shader.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_SHADER_H
diff --git a/src/timeline.c b/src/timeline.c
index 40bd0c1..6841f34 100644
--- a/src/timeline.c
+++ b/src/timeline.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/timeline.h b/src/timeline.h
index cc2f9b6..b4d9d26 100644
--- a/src/timeline.h
+++ b/src/timeline.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_TIMELINE_H
diff --git a/src/tween.c b/src/tween.c
index 5b8997b..8c3fb60 100644
--- a/src/tween.c
+++ b/src/tween.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/tween.h b/src/tween.h
index 52bb932..32197e8 100644
--- a/src/tween.h
+++ b/src/tween.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_TWEEN_H
diff --git a/src/utils.c b/src/utils.c
index ea72dc8..abbf006 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "internal.h"
diff --git a/src/utils.h b/src/utils.h
index e05299f..895d646 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_UTILS_H
diff --git a/test/character.c b/test/character.c
index a7b4ee2..2ef4435 100644
--- a/test/character.c
+++ b/test/character.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "tests.h"
diff --git a/test/tests.c b/test/tests.c
index a5c1520..2b6a5a0 100644
--- a/test/tests.c
+++ b/test/tests.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "tests.h"
diff --git a/test/tests.h b/test/tests.h
index b073961..e48d13e 100644
--- a/test/tests.h
+++ b/test/tests.h
@@ -4,18 +4,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #ifndef LIBSUPERDERPY_TESTS_H
diff --git a/test/timeline.c b/test/timeline.c
index 0e42b96..cb2a6b0 100644
--- a/test/timeline.c
+++ b/test/timeline.c
@@ -1,18 +1,22 @@
 /*
  * Copyright (c) Sebastian Krzyszkowiak <dos@dosowisko.net>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
+ * This file is part of libsuperderpy.
+ *
+ * libsuperderpy is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * libsuperderpy is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libsuperderpy. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Also, ponies.
  */
 
 #include "tests.h"