1 files changed, 1 insertions, 0 deletions
diff --git a/FL/mac.H b/FL/mac.H
index 3883d2758..d85b63bc1 100644
--- a/FL/mac.H
+++ b/FL/mac.H
@@ -33,6 +33,7 @@
 #if !defined(Fl_X_H)
 #  error "Never use <FL/mac.H> directly; include <FL/x.H> instead."
 #endif // !Fl_X_H
+#include <FL/Fl_Widget.H>
 
 typedef void* Window;	    // this is really a pointer to the subclass FLWindow of NSWindow
 typedef void* Fl_Offscreen; // this is really a CGContextRef