diff --git a/modules/zigbee2mqtt/zigbee2mqtt.class.php b/modules/zigbee2mqtt/zigbee2mqtt.class.php
index fc770cd..1cc95e4 100644
--- a/modules/zigbee2mqtt/zigbee2mqtt.class.php
+++ b/modules/zigbee2mqtt/zigbee2mqtt.class.php
@@ -2356,7 +2356,7 @@ function admin(&$out) {
 
 // if ($this-tab=='map') {
 //global $tab;
- if (tab=='map') {
+ if ($tab=='map') {
 
    $this->redirect("?tab=map");
 }