diff --git a/src/main/java/com/corundumstudio/socketio/AuthorizationListener.java b/src/main/java/com/corundumstudio/socketio/AuthorizationListener.java
index 8256a6b..886a076 100644
--- a/src/main/java/com/corundumstudio/socketio/AuthorizationListener.java
+++ b/src/main/java/com/corundumstudio/socketio/AuthorizationListener.java
@@ -1,3 +1,18 @@
+/**
+ * Copyright 2012 Nikita Koksharov
+ *
+ * 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.corundumstudio.socketio;
 
 public interface AuthorizationListener {
diff --git a/src/main/java/com/corundumstudio/socketio/HandshakeData.java b/src/main/java/com/corundumstudio/socketio/HandshakeData.java
index e399bf2..61f887c 100644
--- a/src/main/java/com/corundumstudio/socketio/HandshakeData.java
+++ b/src/main/java/com/corundumstudio/socketio/HandshakeData.java
@@ -1,3 +1,18 @@
+/**
+ * Copyright 2012 Nikita Koksharov
+ *
+ * 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.corundumstudio.socketio;
 
 import java.net.InetSocketAddress;
diff --git a/src/main/java/com/corundumstudio/socketio/handler/SuccessAuthorizationListener.java b/src/main/java/com/corundumstudio/socketio/handler/SuccessAuthorizationListener.java
index 7c8eb08..dfded95 100644
--- a/src/main/java/com/corundumstudio/socketio/handler/SuccessAuthorizationListener.java
+++ b/src/main/java/com/corundumstudio/socketio/handler/SuccessAuthorizationListener.java
@@ -1,3 +1,18 @@
+/**
+ * Copyright 2012 Nikita Koksharov
+ *
+ * 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.corundumstudio.socketio.handler;
 
 import com.corundumstudio.socketio.AuthorizationListener;