diff --git a/src/ProtocolBuffers.Test/CSharpOptionsTest.cs b/src/ProtocolBuffers.Test/CSharpOptionsTest.cs
index a0e04fc..2c75597 100644
--- a/src/ProtocolBuffers.Test/CSharpOptionsTest.cs
+++ b/src/ProtocolBuffers.Test/CSharpOptionsTest.cs
@@ -1,4 +1,5 @@
-﻿// Protocol Buffers - Google's data interchange format
+﻿#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
 // http://github.com/jskeet/dotnet-protobufs/
 // Original C++/Java/Python code:
@@ -29,6 +30,8 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+
 using Google.ProtocolBuffers.DescriptorProtos;
 using Google.ProtocolBuffers.Descriptors;
 using NUnit.Framework;