diff --git a/htdocs/don/list.php b/htdocs/don/list.php
index ac704571daa..c2f89ebc759 100644
--- a/htdocs/don/list.php
+++ b/htdocs/don/list.php
@@ -59,6 +59,7 @@ $search_status = (GETPOST("search_status", 'intcomma') != '') ? GETPOST("search_
 $search_all = trim((GETPOST('search_all', 'alphanohtml') != '') ?GETPOST('search_all', 'alphanohtml') : GETPOST('sall', 'alphanohtml'));
 $search_ref = GETPOST('search_ref', 'alpha');
 $search_company = GETPOST('search_company', 'alpha');
+$search_thirdparty = GETPOST('search_thirdparty', 'alpha');
 $search_name = GETPOST('search_name', 'alpha');
 $search_amount = GETPOST('search_amount', 'alpha');
 $optioncss = GETPOST('optioncss', 'alpha');
@@ -71,6 +72,7 @@ if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter.x'
 	$search_all = "";
 	$search_ref = "";
 	$search_company = "";
+	$search_thirdparty  = "";
 	$search_name = "";
 	$search_amount = "";
 	$search_status = '';