Index: /CKEditor/trunk/_source/plugins/keystrokes/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/keystrokes/plugin.js	(revision 6630)
+++ /CKEditor/trunk/_source/plugins/keystrokes/plugin.js	(revision 6631)
@@ -211,5 +211,5 @@
 	[ CKEDITOR.CTRL + 85 /*U*/, 'underline' ],
 
-	[ CKEDITOR.ALT + 109 /*-*/, 'toolbarCollapse' ],
+	[ CKEDITOR.ALT + ( CKEDITOR.env.ie || CKEDITOR.env.webkit ? 189 : 109 ) /*-*/, 'toolbarCollapse' ],
 	[ CKEDITOR.ALT + 48 /*0*/, 'a11yHelp' ]
 ];