diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/VtnService.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/VtnService.java
index 387bb8a..9cd4b23 100644
--- a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/VtnService.java
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/VtnService.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Open Networking Laboratory
+ * Copyright 2015-present Open Networking Laboratory
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.