1 files changed, 3 insertions, 0 deletions
diff --git a/FL/gl.h b/FL/gl.h
index d175c55ec..0a1be77d0 100644
--- a/FL/gl.h
+++ b/FL/gl.h
@@ -56,6 +56,9 @@
 
 #  ifdef __APPLE__
 #    include <OpenGL/gl.h>
+#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4
+#    include <OpenGL/glext.h>
+#endif
 #  else
 #    include <GL/gl.h>
 #  endif