diff --git a/include/GL/glu.h b/include/GL/glu.h
index ee9717d..0c8420c 100644
--- a/include/GL/glu.h
+++ b/include/GL/glu.h
@@ -17,7 +17,7 @@
 __BEGIN_DECLS
 
 #ifndef BUILD_LIBGL
-#include <gl.h>
+#include "gl.h"
 #endif
 
 #define GLU_FALSE 0