diff --git a/library/Icinga/Web/Url.php b/library/Icinga/Web/Url.php
index 4f978370b..b61fd990f 100644
--- a/library/Icinga/Web/Url.php
+++ b/library/Icinga/Web/Url.php
@@ -212,9 +212,11 @@ class Url
     }
 
     /**
-     * Set the new Filter of the url to be the current filter and the given filter
+     * Add the given filter to the current filter of the URL
      *
-     * @param Filter $and
+     * @param   Filter $and
+     *
+     * @return  $this
      */
     public function addFilter($and)
     {