diff --git a/broker/src/test/java/io/moquette/server/MessageCollector.java b/broker/src/test/java/io/moquette/server/MessageCollector.java
index 74d5f664..07cf40be 100644
--- a/broker/src/test/java/io/moquette/server/MessageCollector.java
+++ b/broker/src/test/java/io/moquette/server/MessageCollector.java
@@ -13,12 +13,12 @@
  *
  * You may elect to redistribute this code under either of these licenses.
  */
+
 package io.moquette.server;
 
 import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
 import org.eclipse.paho.client.mqttv3.MqttCallback;
 import org.eclipse.paho.client.mqttv3.MqttMessage;
-
 import java.util.concurrent.*;
 
 /**
@@ -27,6 +27,7 @@ import java.util.concurrent.*;
 public class MessageCollector implements MqttCallback {
 
     private class ReceivedMessage {
+
         private final MqttMessage message;
         private final String topic;
 
@@ -41,7 +42,7 @@ public class MessageCollector implements MqttCallback {
 
     /**
      * Return the message from the queue if not empty, else return null with wait period.
-     * */
+     */
     public MqttMessage getMessageImmediate() {
         if (m_messages.isEmpty()) {
             return null;
@@ -94,13 +95,13 @@ public class MessageCollector implements MqttCallback {
 
     /**
      * Invoked when the message sent to a server is ACKED (PUBACK or PUBCOMP by the server)
-     * */
+     */
     @Override
     public void deliveryComplete(IMqttDeliveryToken token) {
-//        try {
-//            m_messages.offer(new ReceivedMessage(token.waitMessage(), token.getTopics()[0]));
-//        } catch (MqttException e) {
-//            e.printStackTrace();
-//        }
+        // try {
+        // m_messages.offer(new ReceivedMessage(token.waitMessage(), token.getTopics()[0]));
+        // } catch (MqttException e) {
+        // e.printStackTrace();
+        // }
     }
 }