--- a/template.php	2012-08-24 21:27:22.000000000 +0200
+++ b/template.php	2013-05-16 17:26:33.305187613 +0200
@@ -265,3 +265,3 @@ function rubik_preprocess_help_page(&$va
   foreach (module_implements('help', TRUE) as $module) {
-    if (module_invoke($module, 'help', "admin/help#$module", NULL)) {
+    if (module_invoke($module, 'help', "admin/help#$module", array())) {
       $modules[$module] = $module_info[$module]->info['name'];