diff --git a/adm/tabs/AdminDiscounts.php b/adm/tabs/AdminDiscounts.php
index b082df6f..d471536b 100755
--- a/adm/tabs/AdminDiscounts.php
+++ b/adm/tabs/AdminDiscounts.php
@@ -383,7 +383,7 @@ class AdminDiscounts extends AdminTab
 							var filterValue = \''.(($value = (int)($this->getFieldValue($obj, 'id_customer'))) ? '0_'.$value : (($value = (int)($this->getFieldValue($obj, 'id_group'))) ? '1_'.$value : '')).'\';
 							if ($(\'#filter\').val())
 								filterValue = $(\'#filter\').val();
-
+							$.ajaxSetup({ cache: false });
 							$.getJSON("'.dirname($currentIndex).'/ajax.php",{ajaxDiscountCustomers:1,filter:filterValue},
 								function(obj) {
 									var groups_length = obj.groups.length;