diff --git a/htdocs/core/modules/mailings/modules_mailings.php b/htdocs/core/modules/mailings/modules_mailings.php
index 4f0599bfb3b..6f4a573ccfc 100644
--- a/htdocs/core/modules/mailings/modules_mailings.php
+++ b/htdocs/core/modules/mailings/modules_mailings.php
@@ -168,7 +168,7 @@ class MailingTargets    // This can't be abstract as it is used for some method
         		$sql.= "'".$this->db->escape($targetarray['other'])."',";
         		$sql.= "'".$this->db->escape($targetarray['source_url'])."',";
         		$sql.= (empty($targetarray['source_id']) ? 'null' : "'".$this->db->escape($targetarray['source_id'])."'").",";
-       			$sql .= "'".$this->db->escape(dol_hash($targetarray['email'].';'.$targetarray['name'].';'.$mailing_id.';'.$conf->global->MAILING_EMAIL_UNSUBSCRIBE_KEY))."',";
+       			$sql .= "'".$this->db->escape(dol_hash($targetarray['email'].';'.$targetarray['lastname'].';'.$mailing_id.';'.$conf->global->MAILING_EMAIL_UNSUBSCRIBE_KEY))."',";
         		$sql .= "'".$this->db->escape($targetarray['source_type'])."')";
         		$result=$this->db->query($sql);
         		if ($result)