diff --git a/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/AdminSettingsEdgeEventFetcher.java b/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/AdminSettingsEdgeEventFetcher.java
index 96feb6fa92..c59d6c5001 100644
--- a/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/AdminSettingsEdgeEventFetcher.java
+++ b/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/AdminSettingsEdgeEventFetcher.java
@@ -5,7 +5,7 @@
  * 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
+ *     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,
diff --git a/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/RuleChainsEdgeEventFetcher.java b/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/RuleChainsEdgeEventFetcher.java
index 872f67f62d..115fa3c1e0 100644
--- a/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/RuleChainsEdgeEventFetcher.java
+++ b/application/src/main/java/org/thingsboard/server/service/edge/rpc/fetch/RuleChainsEdgeEventFetcher.java
@@ -5,7 +5,7 @@
  * 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
+ *     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,
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/page/BasePageDataIterable.java b/common/data/src/main/java/org/thingsboard/server/common/data/page/BasePageDataIterable.java
index c67893cee3..4bc490e073 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/page/BasePageDataIterable.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/page/BasePageDataIterable.java
@@ -1,3 +1,18 @@
+/**
+ * Copyright © 2016-2021 The Thingsboard Authors
+ *
+ * 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 org.thingsboard.server.common.data.page;
 
 import java.util.Iterator;
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterable.java b/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterable.java
index 70bfa1ea42..60445e04c8 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterable.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterable.java
@@ -5,7 +5,7 @@
  * 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
+ *     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,
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenant.java b/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenant.java
index 0bb5096089..f9368933d7 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenant.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenant.java
@@ -5,7 +5,7 @@
  * 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
+ *     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,
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenantIdEntityId.java b/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenantIdEntityId.java
index 4480137b32..6849ba4a2f 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenantIdEntityId.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/page/PageDataIterableByTenantIdEntityId.java
@@ -5,7 +5,7 @@
  * 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
+ *     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,