diff --git a/cmake/libsuperderpy.cmake b/cmake/libsuperderpy.cmake
index 5561c81..c96e391 100644
--- a/cmake/libsuperderpy.cmake
+++ b/cmake/libsuperderpy.cmake
@@ -5,6 +5,7 @@ if (NOT LIBSUPERDERPY_CONFIG_INCLUDED)
 	add_definitions(-DLIBSUPERDERPY_ORIENTATION_${LIBSUPERDERPY_ORIENTATION}=true)
 
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -std=c11")
+	set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=undefined")
 
 	if(APPLE)
 		if(CMAKE_INSTALL_PREFIX MATCHES "/usr/local")