diff --git a/htdocs/fourn/class/fournisseur.commande.class.php b/htdocs/fourn/class/fournisseur.commande.class.php
index f32d9d24c01..eed1bbf9eda 100644
--- a/htdocs/fourn/class/fournisseur.commande.class.php
+++ b/htdocs/fourn/class/fournisseur.commande.class.php
@@ -3363,6 +3363,8 @@ class CommandeFournisseurLigne extends CommonOrderLine
 
         $error=0;
 
+        $this->db->begin();
+
         // Mise a jour ligne en base
         $sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";
         $sql.= "  description='".$this->db->escape($this->desc)."'";