diff --git a/htdocs/commande/list_line.php b/htdocs/commande/list_line.php
index 7ea36fe8d09..98e0016d36f 100644
--- a/htdocs/commande/list_line.php
+++ b/htdocs/commande/list_line.php
@@ -247,6 +247,8 @@ if (empty($reshook)) {
 
 	// Purge search criteria
 	if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter.x', 'alpha') || GETPOST('button_removefilter', 'alpha')) { // All tests are required to be compatible with all browsers
+		$productonly = '';
+		$disablelinefree = '';
 		$search_categ = '';
 		$search_user = '';
 		$search_sale = '';