diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 62f001622c7..27a1ac03af4 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -852,7 +852,7 @@ class FormFile
                 // To show ref or specific information according to view to show (defined by $module)
                 if ($modulepart == 'company')          { preg_match('/(\d+)\/[^\/]+$/',$relativefile,$reg); $id=(isset($reg[1])?$reg[1]:''); }
                 if ($modulepart == 'invoice')          { preg_match('/(.*)\/[^\/]+$/',$relativefile,$reg);  $ref=(isset($reg[1])?$reg[1]:''); }
-                if ($modulepart == 'invoice_supplier') { preg_match('/(\d+)\/[^\/]+$/',$relativefile,$reg); $id=(isset($reg[1])?$reg[1]:''); }
+                if ($modulepart == 'invoice_supplier') { preg_match('/([^\/]+)\/[^\/]+$/',$relativefile,$reg); $ref=(isset($reg[1])?$reg[1]:''); if (is_numeric($ref)) { $id=$ref; $ref=''; } }	// $ref may be also id with old supplier invoices
                 if ($modulepart == 'propal')           { preg_match('/(.*)\/[^\/]+$/',$relativefile,$reg);  $ref=(isset($reg[1])?$reg[1]:''); }
                 if ($modulepart == 'order')            { preg_match('/(.*)\/[^\/]+$/',$relativefile,$reg);  $ref=(isset($reg[1])?$reg[1]:''); }
                 if ($modulepart == 'order_supplier')   { preg_match('/(.*)\/[^\/]+$/',$relativefile,$reg);  $ref=(isset($reg[1])?$reg[1]:''); }