diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 8c357894b4a..286204b52a2 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -3350,7 +3350,7 @@ else if ($id > 0 || ! empty($ref))
 
             $ref = dol_sanitizeFileName($object->ref);
             include_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
-            $fileparams = dol_most_recent_file($conf->facture->dir_output . '/' . $ref, preg_quote($object->ref,'/'));
+            $fileparams = dol_most_recent_file($conf->facture->dir_output . '/' . $ref, preg_quote($ref,'/'));
             $file=$fileparams['fullname'];
 
             // Build document if it not exists