diff --git a/htdocs/comm/action/class/ical.class.php b/htdocs/comm/action/class/ical.class.php
index d005549636c..0cfb04b79a6 100644
--- a/htdocs/comm/action/class/ical.class.php
+++ b/htdocs/comm/action/class/ical.class.php
@@ -3,6 +3,7 @@
  * Copyright (C) 2011	   Juanjo Menent		<jmenent@2byte.es>
  * Copyright (C) 2013-2014 Laurent Destailleur	<eldy@users.sourceforge.net>
  * Copyright (C) 2012	   Regis Houssin		<regis.houssin@inodbox.com>
+ * Copyright (C) 2019       Frédéric France     <frederic.france@netlogic.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -96,7 +97,7 @@ class ICal
      * Translate Calendar
      *
      * @param	string 	$uri	Url
-     * @return	array
+     * @return	array|string
      */
     function parse($uri)
     {
@@ -365,7 +366,7 @@ class ICal
     /**
      * Return sorted eventlist as array or false if calenar is empty
      *
-     * @return array
+     * @return array|false
      */
     function get_sort_event_list()
     {