diff --git a/htdocs/core/class/discount.class.php b/htdocs/core/class/discount.class.php
index 2e99a83ec42..d464e986c32 100644
--- a/htdocs/core/class/discount.class.php
+++ b/htdocs/core/class/discount.class.php
@@ -91,7 +91,7 @@ class DiscountAbsolute
         $sql.= " FROM ".MAIN_DB_PREFIX."societe_remise_except as sr";
         $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."facture as f ON sr.fk_facture_source = f.rowid";
         $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."facture as fsup ON sr.fk_invoice_supplier_source = fsup.rowid";
-        $sql.= " WHERE sr.entity = " . $conf->entity;
+	$sql.= " WHERE sr.entity IN (".getEntity('invoice').")";
         if ($rowid) $sql.= " AND sr.rowid=".$rowid;
         if ($fk_facture_source) $sql.= " AND sr.fk_facture_source=".$fk_facture_source;
         if ($fk_invoice_supplier_source) $sql.= " AND sr.fk_invoice_supplier_source=".$fk_invoice_supplier_source;