diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java
index 3986837f6f..1a759bc98c 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java
@@ -271,6 +271,7 @@ public class MqttTransportHandler extends ChannelInboundHandlerAdapter implement
                     case MqttTopics.DEVICE_RPC_RESPONSE_SUB_TOPIC:
                     case MqttTopics.GATEWAY_ATTRIBUTES_TOPIC:
                     case MqttTopics.GATEWAY_RPC_TOPIC:
+                    case MqttTopics.GATEWAY_ATTRIBUTES_RESPONSE_TOPIC:
                     case MqttTopics.DEVICE_ATTRIBUTES_RESPONSES_TOPIC:
                         registerSubQoS(topic, grantedQoSList, reqQoS);
                         break;
diff --git a/netty-mqtt/src/main/java/org/thingsboard/mqtt/MqttClientCallback.java b/netty-mqtt/src/main/java/org/thingsboard/mqtt/MqttClientCallback.java
index 9f86b8e6cd..000925e8b4 100644
--- a/netty-mqtt/src/main/java/org/thingsboard/mqtt/MqttClientCallback.java
+++ b/netty-mqtt/src/main/java/org/thingsboard/mqtt/MqttClientCallback.java
@@ -15,8 +15,6 @@
  */
 package org.thingsboard.mqtt;
 
-import io.netty.channel.ChannelId;
-
 /**
  * Created by Valerii Sosliuk on 12/30/2017.
  */