diff --git a/includes/menu.inc b/includes/menu.inc
index 880aa3476c9..b5a64af254f 100644
--- a/includes/menu.inc
+++ b/includes/menu.inc
@@ -1880,6 +1880,9 @@ function _menu_delete_item($item, $force = FALSE) {
  *   - mlid        Set to an existing value, or 0 or NULL to insert a new link.
  *   - plid        The mlid of the parent.
  *   - router_path The path of the relevant router item.
+ * @return
+ *   The mlid of the saved menu link, or FALSE if the menu link could not be 
+ *   saved.
  */
 function menu_link_save(&$item) {
   $menu = menu_router_build();