diff --git a/resources/timezones/map_data.txt b/resources/timezones/map_data.txt
index ec5bd1b9c..3c92c8b3e 100644
--- a/resources/timezones/map_data.txt
+++ b/resources/timezones/map_data.txt
@@ -1,4 +1,4 @@
-# Copyright (C) 2015 The Libphonenumber Authors
+# Copyright (C) 2012 The Libphonenumber Authors
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.