Index: wp-admin/css/wp-admin.css
===================================================================
--- wp-admin/css/wp-admin.css	(revision 21626)
+++ wp-admin/css/wp-admin.css	(working copy)
@@ -1528,7 +1528,7 @@
 }
 
 #adminmenu li.wp-has-current-submenu .wp-menu-arrow,
-#adminmenu a.menu-top:focus .wp-menu-arrow,
+#adminmenu a.has-submenu:focus .wp-menu-arrow,
 .no-js #adminmenu li.wp-has-submenu:hover .wp-menu-arrow,
 #adminmenu li.current .wp-menu-arrow,
 #adminmenu li.wp-has-submenu.opensub .wp-menu-arrow {