diff --git a/modules/gui/macosx/intf.m b/modules/gui/macosx/intf.m
index c0572f3532f4d483c8a5ac9726b74a4e3153ecf3..ae2603e5fd16d139adb7d2e7d36e21a1c8f826fc 100644
--- a/modules/gui/macosx/intf.m
+++ b/modules/gui/macosx/intf.m
@@ -1337,7 +1337,7 @@ unsigned int CocoaKeyToVLC( unichar i_key )
         val.i_int |= KEY_MODIFIER_COMMAND;
     }
 
-    key = [[o_event charactersIgnoringModifiers] characterAtIndex: 0];
+    key = [[[o_event charactersIgnoringModifiers] lowercaseString] characterAtIndex: 0];
 
     /* handle Lion's default key combo for fullscreen-toggle in addition to our own hotkeys */
     if( key == 'f' && i_pressed_modifiers & NSControlKeyMask && i_pressed_modifiers & NSCommandKeyMask )