diff --git a/include/grpc++/impl/codegen/server_interface.h b/include/grpc++/impl/codegen/server_interface.h
index 5c187c93edacc7a6baa077c72f93aaedf851be2c..f934619c20b997466025bb5b5df79e29c989a72e 100644
--- a/include/grpc++/impl/codegen/server_interface.h
+++ b/include/grpc++/impl/codegen/server_interface.h
@@ -42,7 +42,6 @@
 namespace grpc {
 
 class AsyncGenericService;
-class AsynchronousService;
 class GenericServerContext;
 class RpcService;
 class ServerAsyncStreamingInterface;
@@ -79,7 +78,6 @@ class ServerInterface : public CallHook {
   virtual void Wait() = 0;
 
  protected:
-  friend class AsynchronousService;
   friend class Service;
 
   /// Register a service. This call does not take ownership of the service.