diff --git a/apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/SingleModuleInstaller.java b/apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/SingleModuleInstaller.java
index 0fd55836c..fe767cd0f 100644
--- a/apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/SingleModuleInstaller.java
+++ b/apm-collector/apm-collector-core/src/main/java/org/skywalking/apm/collector/core/module/SingleModuleInstaller.java
@@ -2,7 +2,6 @@ package org.skywalking.apm.collector.core.module;
 
 import java.util.Iterator;
 import java.util.Map;
-import org.skywalking.apm.collector.core.CollectorException;
 import org.skywalking.apm.collector.core.client.ClientException;
 import org.skywalking.apm.collector.core.cluster.ClusterDataListenerDefine;
 import org.skywalking.apm.collector.core.cluster.ClusterModuleContext;