Index: admin_menu.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/admin_menu/admin_menu.inc,v
retrieving revision 1.1.4.18
diff -u -p -r1.1.4.18 admin_menu.inc
--- admin_menu.inc	17 Dec 2008 09:10:24 -0000	1.1.4.18
+++ admin_menu.inc	9 Jan 2009 10:15:08 -0000
@@ -309,7 +309,7 @@ function admin_menu_copy_items(&$_admin_
         $item['title'] = check_plain(strtr($title, array('!title' => $_menu['items'][$mid]['title'])));
       }
       // Only add child to target if it does not already exist.
-      if (!in_array($mid, $_admin_menu[$target_pid]['children'])) {
+      if (!in_array($mid, $_admin_menu[$target_pid]['children'], TRUE)) {
         admin_menu_add_item($_admin_menu, $target_pid, $item);
       }