diff --git a/htdocs/product/stock/class/mouvementstock.class.php b/htdocs/product/stock/class/mouvementstock.class.php
index 631f6697c33..6088c14ed60 100644
--- a/htdocs/product/stock/class/mouvementstock.class.php
+++ b/htdocs/product/stock/class/mouvementstock.class.php
@@ -176,8 +176,8 @@ class MouvementStock extends CommonObject
                         		if ($this->db->jdate($obj->eatby) != $eatby && $this->db->jdate($obj->eatby) != $eatbywithouthour)    // We test date without hours and with hours for backward compatibility 
                                 {
                                     // If found and eatby/sellby defined into table and provided and differs, return error
-                                    $this->errors[]=$langs->trans("ThisSerialAlreadyExistWithDifferentDate", $batch, dol_print_date($this->db->jdate($obj->eatby)), dol_print_date($eatby));
-                                    dol_syslog($langs->transnoentities("ThisSerialAlreadyExistWithDifferentDate", $batch, dol_print_date($this->db->jdate($obj->eatby)), dol_print_date($eatby)), LOG_ERR);
+                                    $this->errors[]=$langs->trans("ThisSerialAlreadyExistWithDifferentDate", $batch, dol_print_date($this->db->jdate($obj->eatby), 'dayhour'), dol_print_date($eatby, 'dayhour'));
+                                    dol_syslog("ThisSerialAlreadyExistWithDifferentDate batch=".$batch.", eatby found into product_lot = ".$obj->eatby." = ".dol_print_date($this->db->jdate($obj->eatby), 'dayhourrfc')." so eatbywithouthour = ".$eatbywithouthour." = ".dol_print_date($eatbywithouthour)." - eatby provided = ".$eatby." = ".dol_print_date($eatby, 'dayhourrfc'), LOG_ERR);
                                     $this->db->rollback();
                                     return -3;
                                 }