--- customfilter.module.orig	2009-10-15 15:54:43.000000000 +0200
+++ customfilter.module	2009-10-15 17:06:16.000000000 +0200
@@ -203,7 +203,9 @@
  */
 function customfilter_menu($may_cache) {
   $access = user_access('administer customfilter');
-  $arg = arg();
+  for ($i=0; $i<5; $i++ ) {
+     $arg[$i] = arg($i);
+  }
   $items = array();
 
   if ($may_cache) {