diff --git a/htdocs/core/class/stats.class.php b/htdocs/core/class/stats.class.php
index a372e6013a8..ecd3d4dba91 100644
--- a/htdocs/core/class/stats.class.php
+++ b/htdocs/core/class/stats.class.php
@@ -3,7 +3,8 @@
  * Copyright (c) 2008-2013	Laurent Destailleur		<eldy@users.sourceforge.net>
  * Copyright (C) 2012		Regis Houssin			<regis.houssin@inodbox.com>
  * Copyright (C) 2012       Marcos García           <marcosgdf@gmail.com>
- * Copyright (C) 2024		MDW							<mdeweerd@users.noreply.github.com>
+ * Copyright (C) 2024		MDW						<mdeweerd@users.noreply.github.com>
+ * Copyright (C) 2024       Frédéric France         <frederic.france@free.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
@@ -38,6 +39,10 @@ abstract class Stats
 	 * @var array<string,int>	Dates of cache file read by methods
 	 */
 	protected $lastfetchdate = array();
+
+	/**
+	 * @var string cachefilesuffix
+	 */
 	public $cachefilesuffix = ''; // Suffix to add to name of cache file (to avoid file name conflicts)
 
 	/**