diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 5a55b3a8a9c..d94354df68b 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -604,7 +604,7 @@ class FormFile
 
 					// Show file name with link to download
 					$out.= '<td class="nowrap">';
-					$out.= '<a data-ajax="false" href="'.$documenturl.'?modulepart='.$modulepart.'&amp;file='.urlencode($relativepath).'"';
+					$out.= '<a data-ajax="false" href="'.$documenturl.'?modulepart='.$modulepart.'&amp;file='.urlencode($relativepath).($param?'&'.$param:'').'"';
 					$mime=dol_mimetype($relativepath,'',0);
 					if (preg_match('/text/',$mime)) $out.= ' target="_blank"';
 					$out.= ' target="_blank">';