diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index c61d778a9f9..4a8390d80cd 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -2634,7 +2634,7 @@ class Product extends CommonObject
      *  Charge tableau des stats expedition client pour le produit/service
      *
      * @param   int         $socid                  Id societe pour filtrer sur une societe
-     * @param   string      $filtrestatut           Id statut pour filtrer sur un statut
+     * @param   string      $filtrestatut           [=''] Ids order status separated by comma
      * @param   int         $forVirtualStock        Ignore rights filter for virtual stock calculation.
      * @param   string      $filterShipmentStatus   [=''] Ids shipment status separated by comma
      * @return  int         <0 if KO, >0 if OK (Tableau des stats)