diff --git a/td/telegram/AlarmManager.cpp b/td/telegram/AlarmManager.cpp
index f0cccd898..3dbff646b 100644
--- a/td/telegram/AlarmManager.cpp
+++ b/td/telegram/AlarmManager.cpp
@@ -6,13 +6,51 @@
 //
 #include "td/telegram/AlarmManager.h"
 
+#include "td/telegram/Global.h"
+
 namespace td {
 
 AlarmManager::AlarmManager(ActorShared<> parent) : parent_(std::move(parent)) {
+  alarm_timeout_.set_callback(on_alarm_timeout_callback);
+  alarm_timeout_.set_callback_data(static_cast<void *>(this));
 }
 
 void AlarmManager::tear_down() {
+  while (!pending_alarms_.empty()) {
+    auto it = pending_alarms_.begin();
+    auto alarm_id = it->first;
+    auto promise = std::move(it->second);
+    pending_alarms_.erase(it);
+    promise.set_error(G()->request_aborted_error());
+    alarm_timeout_.cancel_timeout(alarm_id);
+  }
   parent_.reset();
 }
 
+void AlarmManager::on_alarm_timeout_callback(void *alarm_manager_ptr, int64 alarm_id) {
+  auto alarm_manager = static_cast<AlarmManager *>(alarm_manager_ptr);
+  auto alarm_manager_id = alarm_manager->actor_id(alarm_manager);
+  send_closure_later(alarm_manager_id, &AlarmManager::on_alarm_timeout, alarm_id);
+}
+
+void AlarmManager::on_alarm_timeout(int64 alarm_id) {
+  auto it = pending_alarms_.find(alarm_id);
+  if (it == pending_alarms_.end()) {
+    return;
+  }
+  auto promise = std::move(it->second);
+  pending_alarms_.erase(alarm_id);
+  promise.set_value(Unit());
+}
+
+void AlarmManager::set_alarm(double seconds, Promise<Unit> &&promise) {
+  if (seconds < 0 || seconds > 3e9) {
+    return promise.set_error(Status::Error(400, "Wrong parameter seconds specified"));
+  }
+
+  auto alarm_id = alarm_id_++;
+  pending_alarms_.emplace(alarm_id, std::move(promise));
+  alarm_timeout_.set_timeout_in(alarm_id, seconds);
+}
+
 }  // namespace td
diff --git a/td/telegram/AlarmManager.h b/td/telegram/AlarmManager.h
index b4e65cca3..d58091935 100644
--- a/td/telegram/AlarmManager.h
+++ b/td/telegram/AlarmManager.h
@@ -7,8 +7,11 @@
 #pragma once
 
 #include "td/actor/actor.h"
+#include "td/actor/MultiTimeout.h"
 
 #include "td/utils/common.h"
+#include "td/utils/FlatHashMap.h"
+#include "td/utils/Promise.h"
 
 namespace td {
 
@@ -18,10 +21,20 @@ class AlarmManager final : public Actor {
  public:
   explicit AlarmManager(ActorShared<> parent);
 
+  void set_alarm(double seconds, Promise<Unit> &&promise);
+
  private:
   void tear_down() final;
 
+  static void on_alarm_timeout_callback(void *alarm_manager_ptr, int64 alarm_id);
+
+  void on_alarm_timeout(int64 alarm_id);
+
   ActorShared<> parent_;
+
+  int64 alarm_id_ = 1;
+  FlatHashMap<int64, Promise<Unit>> pending_alarms_;
+  MultiTimeout alarm_timeout_{"AlarmTimeout"};
 };
 
 }  // namespace td
diff --git a/td/telegram/Requests.cpp b/td/telegram/Requests.cpp
index 054ab8f65..510715521 100644
--- a/td/telegram/Requests.cpp
+++ b/td/telegram/Requests.cpp
@@ -8,6 +8,7 @@
 
 #include "td/telegram/AccentColorId.h"
 #include "td/telegram/AccountManager.h"
+#include "td/telegram/AlarmManager.h"
 #include "td/telegram/AnimationsManager.h"
 #include "td/telegram/Application.h"
 #include "td/telegram/AttachMenuManager.h"
@@ -7704,14 +7705,8 @@ void Requests::on_request(uint64 id, td_api::answerCustomQuery &request) {
 }
 
 void Requests::on_request(uint64 id, const td_api::setAlarm &request) {
-  if (request.seconds_ < 0 || request.seconds_ > 3e9) {
-    return send_error_raw(id, 400, "Wrong parameter seconds specified");
-  }
-
-  // TODO
-  int64 alarm_id = td_->alarm_id_++;
-  td_->pending_alarms_.emplace(alarm_id, id);
-  td_->alarm_timeout_.set_timeout_in(alarm_id, request.seconds_);
+  CREATE_OK_REQUEST_PROMISE();
+  send_closure(td_->alarm_manager_, &AlarmManager::set_alarm, request.seconds_, std::move(promise));
 }
 
 void Requests::on_request(uint64 id, td_api::searchHashtags &request) {
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index 419083c11..b3b993116 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -135,25 +135,6 @@ Td::Td(unique_ptr<TdCallback> callback, Options options)
 
 Td::~Td() = default;
 
-void Td::on_alarm_timeout_callback(void *td_ptr, int64 alarm_id) {
-  auto td = static_cast<Td *>(td_ptr);
-  auto td_id = td->actor_id(td);
-  send_closure_later(td_id, &Td::on_alarm_timeout, alarm_id);
-}
-
-void Td::on_alarm_timeout(int64 alarm_id) {
-  if (close_flag_ >= 2) {
-    // pending_alarms_ was already cleared
-    return;
-  }
-
-  auto it = pending_alarms_.find(alarm_id);
-  CHECK(it != pending_alarms_.end());
-  uint64 request_id = it->second;
-  pending_alarms_.erase(alarm_id);
-  send_result(request_id, make_tl_object<td_api::ok>());
-}
-
 bool Td::ignore_background_updates() const {
   return can_ignore_background_updates_ && option_manager_->get_option_boolean("ignore_background_updates");
 }
@@ -456,9 +437,6 @@ void Td::start_up() {
 
   alarm_manager_ = create_actor<AlarmManager>("AlarmManager", create_reference());
 
-  alarm_timeout_.set_callback(on_alarm_timeout_callback);
-  alarm_timeout_.set_callback_data(static_cast<void *>(this));
-
   CHECK(state_ == State::WaitParameters);
   for (auto &update : get_fake_current_state()) {
     send_update(std::move(update));
@@ -624,12 +602,6 @@ void Td::dec_request_actor_refcnt() {
 }
 
 void Td::clear_requests() {
-  while (!pending_alarms_.empty()) {
-    auto it = pending_alarms_.begin();
-    auto alarm_id = it->first;
-    pending_alarms_.erase(it);
-    alarm_timeout_.cancel_timeout(alarm_id);
-  }
   while (!request_set_.empty()) {
     uint64 id = request_set_.begin()->first;
     if (destroy_flag_) {
@@ -774,6 +746,7 @@ void Td::close_impl(bool destroy_flag) {
     close_flag_ = 4;
     G()->set_close_flag();
     clear_requests();
+    alarm_manager_.reset();
     send_update(td_api::make_object<td_api::updateAuthorizationState>(
         td_api::make_object<td_api::authorizationStateClosing>()));
 
diff --git a/td/telegram/Td.h b/td/telegram/Td.h
index 80da879af..27374be2a 100644
--- a/td/telegram/Td.h
+++ b/td/telegram/Td.h
@@ -16,7 +16,6 @@
 #include "td/telegram/telegram_api.h"
 
 #include "td/actor/actor.h"
-#include "td/actor/MultiTimeout.h"
 
 #include "td/utils/buffer.h"
 #include "td/utils/common.h"
@@ -375,10 +374,6 @@ class Td final : public Actor {
 
   bool can_ignore_background_updates_ = false;
 
-  int64 alarm_id_ = 1;
-  FlatHashMap<int64, uint64> pending_alarms_;
-  MultiTimeout alarm_timeout_{"AlarmTimeout"};
-
   vector<std::pair<uint64, td_api::object_ptr<td_api::Function>>> pending_preauthentication_requests_;
 
   vector<std::pair<uint64, td_api::object_ptr<td_api::Function>>> pending_set_parameters_requests_;
@@ -392,10 +387,6 @@ class Td final : public Actor {
 
   vector<td_api::object_ptr<td_api::Update>> get_fake_current_state() const;
 
-  static void on_alarm_timeout_callback(void *td_ptr, int64 alarm_id);
-
-  void on_alarm_timeout(int64 alarm_id);
-
   template <class T>
   friend class RequestActor;  // uses send_result/send_error
   friend class AuthManager;   // uses send_result/send_error, TODO pass Promise<>