Fixing Cpp tests.
diff --git a/test/cpp/end2end/mock_test.cc b/test/cpp/end2end/mock_test.cc
index 9c35fed..a2a2f68 100644
--- a/test/cpp/end2end/mock_test.cc
+++ b/test/cpp/end2end/mock_test.cc
@@ -244,7 +244,7 @@
 
   void ResetStub() {
     std::shared_ptr<Channel> channel =
-        CreateChannel(server_address_.str(), InsecureCredentials());
+        CreateChannel(server_address_.str(), InsecureChannelCredentials());
     stub_ = grpc::cpp::test::util::TestService::NewStub(channel);
   }