diff --git a/include/grpcpp/server_builder_impl.h b/include/grpcpp/server_builder_impl.h
index fb91428173d..a8323c38510 100644
--- a/include/grpcpp/server_builder_impl.h
+++ b/include/grpcpp/server_builder_impl.h
@@ -324,7 +324,7 @@ class ServerBuilder {
   std::shared_ptr<grpc::ServerCredentials> creds_;
   std::vector<std::unique_ptr<grpc::ServerBuilderPlugin>> plugins_;
   grpc_resource_quota* resource_quota_;
-  grpc::AsyncGenericService* generic_service_;
+  grpc::AsyncGenericService* generic_service_{nullptr};
   grpc::experimental::CallbackGenericService* callback_generic_service_{
       nullptr};
   struct {