diff --git a/inc/mqttclient.class.php b/inc/mqttclient.class.php
index a6094cd7..53258144 100644
--- a/inc/mqttclient.class.php
+++ b/inc/mqttclient.class.php
@@ -233,19 +233,19 @@ protected function getMQTTConnection() {
          'mqtt_broker_internal_address',
          'mqtt_broker_port',
          'mqtt_broker_tls_port',
-         'mqtt_broker_tls',
+         'mqtt_tls_for_backend',
          'mqtt_broker_tls_ciphers',
          'mqtt_user',
          'mqtt_passwd'
       ]);
       if (empty($config['mqtt_broker_internal_address'])
           || empty($config['mqtt_broker_port']) || empty($config['mqtt_broker_tls_port'])
-          || (!isset($config['mqtt_broker_tls']))) {
+          || (!isset($config['mqtt_tls_for_backend']))) {
          return false;
       } else {
          $mqttBrokerAddress = $config['mqtt_broker_internal_address'];
          $mqttBrokerPort = $config['mqtt_broker_port'];
-         $isTls = $config['mqtt_broker_tls'] != '0';
+         $isTls = $config['mqtt_tls_for_backend'] != '0';
          if ($isTls) {
             $mqttBrokerPort = $config['mqtt_broker_tls_port'];
          }