diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index d324e3dcb..e213a8e05 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -566,7 +566,7 @@ static void do_timer(CFRunLoopTimerRef timer, void* data)
 }
 - (BOOL)canBecomeKeyWindow
 {
-  return !w->tooltip_window();
+  return !(w->tooltip_window() || w->menu_window());
 }
 @end