diff --git modules/menu/menu.admin.inc modules/menu/menu.admin.inc
index 1f3c4f7..be09303 100644
--- modules/menu/menu.admin.inc
+++ modules/menu/menu.admin.inc
@@ -377,7 +377,7 @@ function menu_edit_item_validate($form, &$form_state) {
     else {
       unset($item['options']['fragment']);
     }
-    if ($item['link_path'] != $parsed_link['path']) {
+    if (isset($parsed_link['path']) && $item['link_path'] != $parsed_link['path']) {
       $item['link_path'] = $parsed_link['path'];
     }
   }
diff --git modules/menu/menu.test modules/menu/menu.test
index 6c11da6..a0b464c 100644
--- modules/menu/menu.test
+++ modules/menu/menu.test
@@ -318,7 +318,7 @@ class MenuTestCase extends DrupalWebTestCase {
    * @param string $menu_name Menu name.
    */
   function addInvalidMenuLink($menu_name = 'navigation') {
-    foreach (array('-&-', 'admin/people/permissions') as $link_path) {
+    foreach (array('-&-', 'admin/people/permissions', '#') as $link_path) {
       $edit = array(
         'link_path' => $link_path,
         'link_title' => 'title',