--- realname_userreference.module	2009-05-20 12:50:30.000000000 +0200
+++ realname_userreference.module.new	2009-05-18 08:15:57.000000000 +0200
@@ -381,7 +381,7 @@ function _realname_userreference_potenti
   }
   if (!empty($roles) && !in_array(DRUPAL_AUTHENTICATED_RID, $roles)) {
     $where[] = "r.rid IN (". implode($roles, ',') .")";
-    $join[] = 'LEFT JOIN {users_roles} r ON u.uid = r.uid';
+    $join[] = 'LEFT JOIN {users_roles} r ON n.uid = r.uid';
   }
 
   $status = array();