diff --git a/plugins/Live/API.php b/plugins/Live/API.php
index 619b475a098..76ab9b999b4 100644
--- a/plugins/Live/API.php
+++ b/plugins/Live/API.php
@@ -368,8 +368,6 @@ public function getVisitorProfile($idSite, $visitorId = false, $segment = false,
          * The following visitor profile elements can be set to augment the visitor profile popup:
          * - visitorAvatar: A URL to an image to display in the top left corner of the popup.
          * - visitorDescription: Text to be used as the tooltip of the avatar image.
-         *
-         * Callback Signature: function (array &$result);
          */
         Piwik_PostEvent('Live.getExtraVisitorDetails', array(&$result));