diff --git a/htdocs/admin/supplier_order.php b/htdocs/admin/supplier_order.php
index bc25e8efa87..e10fc9d6961 100644
--- a/htdocs/admin/supplier_order.php
+++ b/htdocs/admin/supplier_order.php
@@ -376,7 +376,7 @@ foreach ($dirmodels as $reldir)
         {
             while (($file = readdir($handle))!==false)
             {
-                if (preg_match('/\.modules\.php$/i',$file) && substr($file,0,4) == 'pdf_')
+                if (preg_match('/\.modules\.php$/i',$file) && preg_match('/^(pdf_|doc_)/',$file))
                 {
                     $name = substr($file, 4, dol_strlen($file) -16);
                     $classname = substr($file, 0, dol_strlen($file) -12);