diff --git a/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManager.java b/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManager.java
index c38ef0ed8f..24e260c26d 100644
--- a/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManager.java
+++ b/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManager.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.alibaba.druid.stat;
 
 import java.lang.management.ManagementFactory;
diff --git a/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManagerMBean.java b/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManagerMBean.java
index b43762c005..ca548eda23 100644
--- a/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManagerMBean.java
+++ b/src/main/java/com/alibaba/druid/stat/DruidDataSourceStatManagerMBean.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.alibaba.druid.stat;
 
 import javax.management.JMException;
diff --git a/src/main/java/com/alibaba/druid/stat/TableStat.java b/src/main/java/com/alibaba/druid/stat/TableStat.java
index 27032f7ee3..c659e3d141 100644
--- a/src/main/java/com/alibaba/druid/stat/TableStat.java
+++ b/src/main/java/com/alibaba/druid/stat/TableStat.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.alibaba.druid.stat;
 
 public class TableStat {