diff --git a/core/includes/menu.inc b/core/includes/menu.inc
index 7afc274..64b36ef 100644
--- a/core/includes/menu.inc
+++ b/core/includes/menu.inc
@@ -2358,7 +2358,7 @@ function menu_set_active_trail($new_trail = NULL) {
       // a stripped down menu tree containing the active trail only, in case
       // the given menu has not been built in this request yet.
       $tree = menu_tree_page_data($preferred_link['menu_name'], NULL, TRUE);
-      list($key, $curr) = each($tree);
+      list(, $curr) = each($tree);
     }
     // There is no link for the current path.
     else {
@@ -2388,7 +2388,7 @@ function menu_set_active_trail($new_trail = NULL) {
         }
         $tree = $curr['below'] ? $curr['below'] : array();
       }
-      list($key, $curr) = each($tree);
+      list(, $curr) = each($tree);
     }
     // Make sure the current page is in the trail to build the page title, by
     // appending either the preferred link or the menu router item for the