diff --git a/AppKit/CPMenu/CPMenu.j b/AppKit/CPMenu/CPMenu.j
index 962307a66..4ef91ea7e 100644
--- a/AppKit/CPMenu/CPMenu.j
+++ b/AppKit/CPMenu/CPMenu.j
@@ -1077,6 +1077,9 @@ var _CPMenuBarVisible               = NO,
 
                 anEvent._isKeyEquivalent = YES; // prevent the menu keystroke from beeing inserted into textview
                 [self performActionForItemAtIndex:index];
+
+                // we are done with this event in cappuccino space. do not let the browser do something weird additionally (e.g. command-o).
+                _CPDOMEventStop(anEvent._DOMEvent);
             }
             else
             {