diff --git a/services/lib/src/ReactorStatusHolder.h b/services/lib/src/ReactorStatusHolder.h
--- a/services/lib/src/ReactorStatusHolder.h
+++ b/services/lib/src/ReactorStatusHolder.h
@@ -22,7 +22,7 @@
   std::mutex statusAccessMutex;
 
 public:
-  std::atomic<ReactorState> state = ReactorState::NONE;
+  std::atomic<ReactorState> state = {ReactorState::NONE};
 
   grpc::Status getStatus() {
     const std::unique_lock<std::mutex> lock(this->statusAccessMutex);
diff --git a/services/lib/src/server-base-reactors/ServerWriteReactorBase.h b/services/lib/src/server-base-reactors/ServerWriteReactorBase.h
--- a/services/lib/src/server-base-reactors/ServerWriteReactorBase.h
+++ b/services/lib/src/server-base-reactors/ServerWriteReactorBase.h
@@ -46,7 +46,7 @@
   // https://github.com/grpc/grpc/blob/v1.39.x/include/grpcpp/impl/codegen/client_callback.h#L237
   virtual void initialize(){};
   void OnWriteDone(bool ok) override;
-  void terminate(const grpc::Status &status);
+  void terminate(const grpc::Status &status) override;
   void OnDone() override;
 
   // - argument response - should be filled with data that will be sent to the