diff --git a/htdocs/core/boxes/box_birthdays_members.php b/htdocs/core/boxes/box_birthdays_members.php
index fc8dc4c6745..64a1f16e624 100644
--- a/htdocs/core/boxes/box_birthdays_members.php
+++ b/htdocs/core/boxes/box_birthdays_members.php
@@ -2,7 +2,7 @@
 /* Copyright (C) 2003-2007 Rodolphe Quiedeville <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2010 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2009 Regis Houssin        <regis.houssin@inodbox.com>
- * Copyright (C) 2015-2019 Frederic France      <frederic.france@netlogic.fr>
+ * Copyright (C) 2015-2023 Frederic 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
@@ -115,7 +115,7 @@ class box_birthdays_members extends ModeleBoxes
 
 					$this->info_box_contents[$line][] = array(
 						'td' => 'class="center nowraponall"',
-						'text' => dol_print_date($dateb, "day", 'gmt').' - '.$age.' '.$langs->trans('DurationYears')
+						'text' => dol_print_date($dateb, "day", 'tzserver').' - '.$age.' '.$langs->trans('DurationYears')
 					);
 
 					/*$this->info_box_contents[$line][] = array(