diff -u b/core/includes/menu.inc b/core/includes/menu.inc
--- b/core/includes/menu.inc
+++ b/core/includes/menu.inc
@@ -460,8 +460,8 @@
  *   menu_router table. The value corresponding to the key 'map' holds the
  *   loaded objects. The value corresponding to the key 'access' is TRUE if the
  *   current user can access this page. The values corresponding to the keys
- *   'title', 'page_arguments', 'access_arguments', and 'theme_arguments' will
- *   be filled in based on the database values and the objects loaded.
+ *   'title', 'page_arguments', and 'access_arguments', will be filled in based
+ *   on the database values and the objects loaded.
  */
 function menu_get_item($path = NULL, $router_item = NULL) {
   $router_items = &drupal_static(__FUNCTION__);
@@ -498,7 +498,6 @@
       if ($router_item['access']) {
         $router_item['map'] = $map;
         $router_item['page_arguments'] = array_merge(menu_unserialize($router_item['page_arguments'], $map), array_slice($map, $router_item['number_parts']));
-        $router_item['theme_arguments'] = array_merge(menu_unserialize($router_item['theme_arguments'], $map), array_slice($map, $router_item['number_parts']));
       }
     }
     $router_items[$path] = $router_item;