diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index 3427e38d99e..b74d458ba3a 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -2264,8 +2264,8 @@ class Commande extends CommonOrder
 		}
 		$sql .= ' ed.fk_origin_line = cd.rowid';
 		$sql .= ' AND cd.fk_commande = '.((int) $this->id);
-		if ($this->fk_product > 0) {
-			$sql .= ' AND cd.fk_product = '.((int) $this->fk_product);
+		if ($fk_product > 0) {
+			$sql .= ' AND cd.fk_product = '.((int) $fk_product);
 		}
 		if ($filtre_statut >= 0) {
 			$sql .= ' AND e.fk_statut >= '.((int) $filtre_statut);