Index: simplemenu.module
===================================================================
--- simplemenu.module	(revision 218)
+++ simplemenu.module	(working copy)
@@ -332,7 +332,7 @@
   if (variable_get('simplemenu_devel', 0) && module_exists('devel')) {
     if (user_access('access devel information')) {
       $output = '<li class="expanded"><a href="'. url('admin/settings/devel') .'">'. t('Devel module') .'</a>';
-      $output .= simplemenu_menu_tree('devel');
+      $output .= simplemenu_menu_tree('devel:0');
       $output .= '</li>';
     }
   }