Update copyrights
diff --git a/examples/cpp/helloworld/Makefile b/examples/cpp/helloworld/Makefile
index b785612..4b1867e 100644
--- a/examples/cpp/helloworld/Makefile
+++ b/examples/cpp/helloworld/Makefile
@@ -1,5 +1,5 @@
#
-# Copyright 2015-2016, Google Inc.
+# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
diff --git a/examples/cpp/helloworld/greeter_async_server.cc b/examples/cpp/helloworld/greeter_async_server.cc
index c9b1a67..64e065b 100644
--- a/examples/cpp/helloworld/greeter_async_server.cc
+++ b/examples/cpp/helloworld/greeter_async_server.cc
@@ -1,6 +1,6 @@
/*
*
- * Copyright 2015-2016, Google Inc.
+ * Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without