changed 2014 -> 2015
diff --git a/src/csharp/MathClient/MathClient.cs b/src/csharp/MathClient/MathClient.cs
index 4eb76ae..a740c0a 100644
--- a/src/csharp/MathClient/MathClient.cs
+++ b/src/csharp/MathClient/MathClient.cs
@@ -1,6 +1,6 @@
 #region Copyright notice and license
 
-// Copyright 2014, Google Inc.
+// Copyright 2015, Google Inc.
 // All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or without