diff --git a/openvidu-server/src/main/java/io/openvidu/server/core/Participant.java b/openvidu-server/src/main/java/io/openvidu/server/core/Participant.java
index c4d9e964..f5640779 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/core/Participant.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/core/Participant.java
@@ -37,7 +37,7 @@ public class Participant {
 	protected EndpointType endpointType; // Type of participant (web participant, IP cam participant...)
 
 	protected boolean streaming = false;
-	protected volatile boolean closed;
+	protected volatile boolean closed = false;
 
 	private final String METADATA_SEPARATOR = "%/%";
 
diff --git a/openvidu-server/src/main/java/io/openvidu/server/recording/DummyRecordingDownloader.java b/openvidu-server/src/main/java/io/openvidu/server/recording/DummyRecordingDownloader.java
index f557c14a..d62cb0ee 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/recording/DummyRecordingDownloader.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/recording/DummyRecordingDownloader.java
@@ -1,3 +1,20 @@
+/*
+ * (C) Copyright 2017-2020 OpenVidu (https://openvidu.io)
+ *
+ * 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 io.openvidu.server.recording;
 
 import java.io.IOException;
diff --git a/openvidu-server/src/main/java/io/openvidu/server/recording/RecordingNotification.java b/openvidu-server/src/main/java/io/openvidu/server/recording/RecordingNotification.java
index 7802e158..9667b394 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/recording/RecordingNotification.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/recording/RecordingNotification.java
@@ -1,3 +1,20 @@
+/*
+ * (C) Copyright 2017-2020 OpenVidu (https://openvidu.io)
+ *
+ * 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 io.openvidu.server.recording;
 
 /**