diff --git a/lib/outputrenderers.php b/lib/outputrenderers.php
index 3901907b466..d63a0b9dbc7 100644
--- a/lib/outputrenderers.php
+++ b/lib/outputrenderers.php
@@ -4031,10 +4031,10 @@ EOD;
     }
 
     /**
-     * Returns the URL for the favicon.
+     * Returns the moodle_url for the favicon.
      *
      * @since Moodle 2.5.1 2.6
-     * @return string The favicon URL
+     * @return moodle_url The moodle_url for the favicon
      */
     public function favicon() {
         return $this->image_url('favicon', 'theme');