diff --git a/htdocs/core/class/html.formmail.class.php b/htdocs/core/class/html.formmail.class.php
index 00c1c4236c4..74f11a16e5a 100644
--- a/htdocs/core/class/html.formmail.class.php
+++ b/htdocs/core/class/html.formmail.class.php
@@ -4,7 +4,7 @@
  * Copyright (C) 2010-2011 Juanjo Menent	    <jmenent@2byte.es>
  * Copyright (C) 2015-2017 Marcos García        <marcosgdf@gmail.com>
  * Copyright (C) 2015-2017 Nicolas ZABOURI      <info@inovea-conseil.com>
- * Copyright (C) 2018-2019  Frédéric France     <frederic.france@netlogic.fr>
+ * Copyright (C) 2018-2021  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
@@ -584,7 +584,10 @@ class FormMail extends Form
 						$liste['company'] = $conf->global->MAIN_INFO_SOCIETE_NOM.' &lt;'.$conf->global->MAIN_INFO_SOCIETE_MAIL.'&gt;';
 
 						// Add also email aliases if there is some
-						$listaliases = array('user_aliases'=>$user->email_aliases, 'global_aliases'=>$conf->global->MAIN_INFO_SOCIETE_MAIL_ALIASES);
+						$listaliases = array(
+							'user_aliases' => (empty($user->email_aliases) ? '' : $user->email_aliases),
+							'global_aliases' => getDolGlobalString('$conf->global->MAIN_INFO_SOCIETE_MAIL_ALIASES'),
+						);
 
 						// Also add robot email
 						if (!empty($this->fromalsorobot)) {