1 files changed, 3 insertions, 1 deletions
diff --git a/include/grpc++/impl/codegen/client_unary_call.h b/include/grpc++/impl/codegen/client_unary_call.h
index 7c540fade9..8fef3ab353 100644
--- a/include/grpc++/impl/codegen/client_unary_call.h
+++ b/include/grpc++/impl/codegen/client_unary_call.h
@@ -30,8 +30,9 @@ namespace grpc {
 class Channel;
 class ClientContext;
 class CompletionQueue;
-class RpcMethod;
 
+namespace internal {
+class RpcMethod;
 /// Wrapper that performs a blocking unary call
 template <class InputMessage, class OutputMessage>
 Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method,
@@ -67,6 +68,7 @@ Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method,
   return status;
 }
 
+}  // namespace internal
 }  // namespace grpc
 
 #endif  // GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H