diff --git a/mdi.py b/mdi.py
index fca7dab..f33d7bd 100644
--- a/mdi.py
+++ b/mdi.py
@@ -16,7 +16,7 @@ class MDIArea(QMdiArea):
 
 
     def _add_menu(self, bar):
-        menu = bar.addMenu("Windows")
+        menu = bar.addMenu("&Windows")
         menu.addAction("Cascade")
         menu.addAction("Tile")
         menu.addSeparator()