diff --git a/td/telegram/net/NetQueryDispatcher.cpp b/td/telegram/net/NetQueryDispatcher.cpp
index 41492d555..385203983 100644
--- a/td/telegram/net/NetQueryDispatcher.cpp
+++ b/td/telegram/net/NetQueryDispatcher.cpp
@@ -209,12 +209,12 @@ void NetQueryDispatcher::stop() {
   std::lock_guard<std::mutex> guard(main_dc_id_mutex_);
   td_guard_.reset();
   stop_flag_ = true;
-  delayer_.hangup();
-  for (const auto &dc : dcs_) {
-    dc.main_session_.hangup();
-    dc.upload_session_.hangup();
-    dc.download_session_.hangup();
-    dc.download_small_session_.hangup();
+  delayer_.reset();
+  for (auto &dc : dcs_) {
+    dc.main_session_.reset();
+    dc.upload_session_.reset();
+    dc.download_session_.reset();
+    dc.download_small_session_.reset();
   }
   public_rsa_key_watchdog_.reset();
   dc_auth_manager_.reset();
diff --git a/tdactor/td/actor/impl/ActorId-decl.h b/tdactor/td/actor/impl/ActorId-decl.h
index 03db2775b..9fc7f6b98 100644
--- a/tdactor/td/actor/impl/ActorId-decl.h
+++ b/tdactor/td/actor/impl/ActorId-decl.h
@@ -90,7 +90,6 @@ class ActorOwn {
   ActorId<ActorType> get() const;
   ActorId<ActorType> release();
   void reset(ActorId<ActorType> other = ActorId<ActorType>());
-  void hangup() const;
   ActorType *get_actor_unsafe() const;
 
  private:
diff --git a/tdactor/td/actor/impl/ActorId.h b/tdactor/td/actor/impl/ActorId.h
index fa93118e2..30cbbfb91 100644
--- a/tdactor/td/actor/impl/ActorId.h
+++ b/tdactor/td/actor/impl/ActorId.h
@@ -88,15 +88,10 @@ ActorId<ActorType> ActorOwn<ActorType>::release() {
 template <class ActorType>
 void ActorOwn<ActorType>::reset(ActorId<ActorType> other) {
   static_assert(sizeof(ActorType) > 0, "Can't use ActorOwn with incomplete type");
-  hangup();
-  id_ = std::move(other);
-}
-
-template <class ActorType>
-void ActorOwn<ActorType>::hangup() const {
   if (!id_.empty()) {
     send_event(id_, Event::hangup());
   }
+  id_ = std::move(other);
 }
 
 template <class ActorType>