diff --git a/source/gameengine/Ketsji/Makefile b/source/gameengine/Ketsji/Makefile
index 963031d9686..ee0b1e42f22 100644
--- a/source/gameengine/Ketsji/Makefile
+++ b/source/gameengine/Ketsji/Makefile
@@ -39,6 +39,7 @@ include nan_compile.mk
 CCFLAGS += $(LEVEL_1_CPP_WARNINGS)
 
 CPPFLAGS += $(OGL_CPPFLAGS)
+CPPFLAGS += -I$(OPENGL_HEADERS)
 CPPFLAGS += -I$(NAN_PYTHON)/include/python$(NAN_PYTHON_VERSION) -I../../blender/python
 CPPFLAGS += -I$(NAN_STRING)/include    
 CPPFLAGS += -I$(NAN_SOUNDSYSTEM)/include