diff --git a/htdocs/product/stock/stockatdate.php b/htdocs/product/stock/stockatdate.php
index 14eb3942bf9de..f65e31ee823e2 100644
--- a/htdocs/product/stock/stockatdate.php
+++ b/htdocs/product/stock/stockatdate.php
@@ -4,7 +4,7 @@
  * Copyright (C) 2014		Regis Houssin		<regis.houssin@inodbox.com>
  * Copyright (C) 2016		Juanjo Menent		<jmenent@2byte.es>
  * Copyright (C) 2016		ATM Consulting		<support@atm-consulting.fr>
- * Copyright (C) 2019-2021  Frédéric France         <frederic.france@netlogic.fr>
+ * Copyright (C) 2019-2024  Frédéric France     <frederic.france@free.fr>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -470,7 +470,7 @@
 	if ($num) {
 		print '<p>';
 		print '<a href="stockatdate.php?output=csv&sortfield='.urlencode($sortfield).'&sortorder='.urlencode($sortorder).'&type='.((int) $type).'&mode='.urlencode($mode).
-			(($productid > 0)?"&productid=".urlencode($productid):'').
+			(($productid > 0)?"&productid=".((int) $productid):'').
 			$param_warehouse.
 			"&search_ref=".dol_escape_htmltag($search_ref).
 			"&search_nom=".dol_escape_htmltag($search_nom).