kc3-lang/ftgl

diff --git a/demo/tb.c b/demo/tb.c
index b3dd01e..7c4ad8e 100644
--- a/demo/tb.c
+++ b/demo/tb.c
@@ -8,7 +8,11 @@
 /* includes */
 #include <math.h>
 #include <assert.h>
-#include <GL/glut.h>
+#ifdef __APPLE_CC__
+	#include <GLUT/glut.h>
+#else
+	#include <GL/glut.h>
+#endif
 #include "tb.h"
 #include "trackball.h"