add host and port overload for new channel
diff --git a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
index 5aa6f41..aadd49f 100644
--- a/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
+++ b/src/csharp/Grpc.Examples.Tests/MathClientServerTests.cs
@@ -60,7 +60,7 @@
server.AddServiceDefinition(Math.BindService(new MathServiceImpl()));
int port = server.AddListeningPort(host, Server.PickUnusedPort);
server.Start();
- channel = new Channel(host + ":" + port);
+ channel = new Channel(host, port);
// TODO(jtattermusch): get rid of the custom header here once we have dedicated tests
// for header support.