--- ./advuser.module.orig	2010-04-17 16:03:50.000000000 +0200
+++ ./advuser.module	2010-04-18 02:43:54.684465744 +0200
@@ -78,6 +78,7 @@
  * Implementation of hook_help().
  */
 function advuser_help($path, $arg) {
+  $output = '';
   switch ($path) {
     case 'admin/help#advuser': {
       $output = '<p>';