diff --git a/htdocs/fourn/class/fournisseur.facture.class.php b/htdocs/fourn/class/fournisseur.facture.class.php
index 3a27690e7ac..4f9cd93021f 100644
--- a/htdocs/fourn/class/fournisseur.facture.class.php
+++ b/htdocs/fourn/class/fournisseur.facture.class.php
@@ -555,7 +555,7 @@ class FactureFournisseur extends CommonInvoice
         $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."c_paiement as p ON t.fk_mode_reglement = p.id";
 		$sql.= ' LEFT JOIN '.MAIN_DB_PREFIX.'c_incoterms as i ON t.fk_incoterms = i.rowid';
         if ($id)  $sql.= " WHERE t.rowid=".$id;
-        if ($ref) $sql.= " WHERE t.ref='".$this->db->escape($ref)."'";
+        if ($ref) $sql.= " WHERE t.ref='".$this->db->escape($ref)."' AND t.entity IN (".getEntity('supplier_invoice').")";
 
         dol_syslog(get_class($this)."::fetch", LOG_DEBUG);
         $resql=$this->db->query($sql);