diff --git a/FL/mac.H b/FL/mac.H
index 35cedae22..ecfeaa41e 100644
--- a/FL/mac.H
+++ b/FL/mac.H
@@ -92,6 +92,10 @@ typedef float CGFloat;
 #endif
 #endif // CGFLOAT_DEFINED
 
+#else
+
+typedef struct CGContext* CGContextRef;
+
 #endif // FL_LIBRARY || FL_INTERNALS
 
 extern CGContextRef fl_gc;