diff --git a/apm-collector/apm-collector-queue/src/main/java/org/skywalking/apm/collector/queue/QueueModuleDefine.java b/apm-collector/apm-collector-queue/src/main/java/org/skywalking/apm/collector/queue/QueueModuleDefine.java
index e7c4920d4..b2195c853 100644
--- a/apm-collector/apm-collector-queue/src/main/java/org/skywalking/apm/collector/queue/QueueModuleDefine.java
+++ b/apm-collector/apm-collector-queue/src/main/java/org/skywalking/apm/collector/queue/QueueModuleDefine.java
@@ -2,7 +2,6 @@ package org.skywalking.apm.collector.queue;
 
 import java.util.List;
 import org.skywalking.apm.collector.core.client.Client;
-import org.skywalking.apm.collector.core.client.DataMonitor;
 import org.skywalking.apm.collector.core.framework.Handler;
 import org.skywalking.apm.collector.core.module.ModuleDefine;
 import org.skywalking.apm.collector.core.module.ModuleRegistration;
diff --git a/apm-network/src/main/java/org/skywalking/apm/network/trace/component/OfficialComponent.java b/apm-network/src/main/java/org/skywalking/apm/network/trace/component/OfficialComponent.java
index 114066b42..790f70f5f 100644
--- a/apm-network/src/main/java/org/skywalking/apm/network/trace/component/OfficialComponent.java
+++ b/apm-network/src/main/java/org/skywalking/apm/network/trace/component/OfficialComponent.java
@@ -3,7 +3,7 @@ package org.skywalking.apm.network.trace.component;
 /**
  * @author wusheng
  */
-public class OfficialComponent implements Component{
+public class OfficialComponent implements Component {
     private int id;
     private String name;