diff --git a/htdocs/fourn/facture/fiche.php b/htdocs/fourn/facture/fiche.php
index c112844d220..a9d55178bc9 100644
--- a/htdocs/fourn/facture/fiche.php
+++ b/htdocs/fourn/facture/fiche.php
@@ -388,6 +388,7 @@ if ($_REQUEST['action'] == 'update_line')
             $prod = new Product($db);
             $prod->fetch($_POST['idprod']);
             $label = $prod->libelle;
+            if (trim($_POST['label']) != trim($label)) $label=$_POST['label'];
             $type = $prod->type;
         }
         else