diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 325cdac..d3bde3f 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -10,7 +10,7 @@ IF(${PACKAGE_BUILD})
   INSTALL(FILES ${files} DESTINATION ${LIB_INSTALL_DIR}/superderpy)
  ENDIF(UNIX)
 
-ENDIF(${BUILD_PACKAGE})
+ENDIF(${PACKAGE_BUILD})
 
 # TODO: handle libraries in Mac OS X version if needed
 # TODO: handle other architectures
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 71438e6..1301650 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -37,7 +37,7 @@ endif(MINGW)
 IF(${PACKAGE_BUILD})
   SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
   SET(CMAKE_INSTALL_RPATH "\$ORIGIN/../lib/superderpy:\$ORIGIN")
-ENDIF(${BUILD_PACKAGE})
+ENDIF(${PACKAGE_BUILD})
 
 add_executable(superderpy ${SRC_LIST})