diff --git a/htdocs/fourn/commande/list.php b/htdocs/fourn/commande/list.php
index 29b5334d860..70837ee7fc3 100644
--- a/htdocs/fourn/commande/list.php
+++ b/htdocs/fourn/commande/list.php
@@ -134,7 +134,7 @@ $search_multicurrency_montant_ht = GETPOST('search_multicurrency_montant_ht', 'a
 $search_multicurrency_montant_tva = GETPOST('search_multicurrency_montant_tva', 'alpha');
 $search_multicurrency_montant_ttc = GETPOST('search_multicurrency_montant_ttc', 'alpha');
 $optioncss = GETPOST('optioncss', 'alpha');
-$billed = GETPOSTINT('billed');
+$billed = GETPOST('billed', 'int');		// Value '' must be possible
 $search_project_ref = GETPOST('search_project_ref', 'alpha');
 $search_btn = GETPOST('button_search', 'alpha');
 $search_remove_btn = GETPOST('button_removefilter', 'alpha');