diff --git a/cpp/helloworld/greeter_client.cc b/cpp/helloworld/greeter_client.cc
index 44e4447..dd0358a 100644
--- a/cpp/helloworld/greeter_client.cc
+++ b/cpp/helloworld/greeter_client.cc
@@ -36,16 +36,14 @@
 #include <string>
 
 #include <grpc/grpc.h>
-#include <grpc++/channel_arguments.h>
-#include <grpc++/channel_interface.h>
+#include <grpc++/channel.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/status.h>
 #include "helloworld.grpc.pb.h"
 
+using grpc::Channel;
 using grpc::ChannelArguments;
-using grpc::ChannelInterface;
 using grpc::ClientContext;
 using grpc::Status;
 using helloworld::HelloRequest;
@@ -54,7 +52,7 @@
 
 class GreeterClient {
  public:
-  GreeterClient(std::shared_ptr<ChannelInterface> channel)
+  GreeterClient(std::shared_ptr<Channel> channel)
       : stub_(Greeter::NewStub(channel)) {}
 
   std::string SayHello(const std::string& user) {