diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index f3ee31653f7..55e8a5dcb51 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -841,9 +841,10 @@ class FormFile
 		$out='';
 		$this->infofiles=array('nboffiles'=>0,'extensions'=>array(),'files'=>array());
 
+		// Get list of files starting with name of ref (but not followed by "-" to discard uploaded files and get only generated files)
+		// @TODO Why not showing all files by just removing the '[^\-]+' at end of regex ?
 		$filterforfilesearch = preg_quote(basename($modulesubdir),'/').'[^\-]+';
-
-		$file_list=dol_dir_list($filedir, 'files', 0, $filterforfilesearch, '\.meta$|\.png$');	// Get list of files starting with name of ref (but not followed by "-" to discard uploaded files)
+		$file_list=dol_dir_list($filedir, 'files', 0, $filterforfilesearch, '\.meta$|\.png$');	// We also discard .meta and .png preview
 
 		//var_dump($file_list);
 		// For ajax treatment