diff --git a/td/telegram/Contact.cpp b/td/telegram/Contact.cpp
index bfe4cd4d5..94b71d060 100644
--- a/td/telegram/Contact.cpp
+++ b/td/telegram/Contact.cpp
@@ -36,10 +36,18 @@ UserId Contact::get_user_id() const {
   return user_id_;
 }
 
-string Contact::get_phone_number() const {
+const string &Contact::get_phone_number() const {
   return phone_number_;
 }
 
+const string &Contact::get_first_name() const {
+  return first_name_;
+}
+
+const string &Contact::get_last_name() const {
+  return last_name_;
+}
+
 tl_object_ptr<td_api::contact> Contact::get_contact_object() const {
   return make_tl_object<td_api::contact>(phone_number_, first_name_, last_name_, vcard_, user_id_.get());
 }
@@ -82,10 +90,7 @@ StringBuilder &operator<<(StringBuilder &string_builder, const Contact &contact)
                         << ", vCard size = " << contact.vcard_.size() << contact.user_id_ << "]";
 }
 
-Result<Contact> process_input_message_contact(tl_object_ptr<td_api::InputMessageContent> &&input_message_content) {
-  CHECK(input_message_content != nullptr);
-  CHECK(input_message_content->get_id() == td_api::inputMessageContact::ID);
-  auto contact = std::move(static_cast<td_api::inputMessageContact *>(input_message_content.get())->contact_);
+Result<Contact> get_contact(td_api::object_ptr<td_api::contact> &&contact) {
   if (contact == nullptr) {
     return Status::Error(400, "Contact must be non-empty");
   }
@@ -103,8 +108,14 @@ Result<Contact> process_input_message_contact(tl_object_ptr<td_api::InputMessage
     return Status::Error(400, "vCard must be encoded in UTF-8");
   }
 
-  return Contact(contact->phone_number_, contact->first_name_, contact->last_name_, contact->vcard_,
-                 UserId(contact->user_id_));
+  return Contact(std::move(contact->phone_number_), std::move(contact->first_name_), std::move(contact->last_name_),
+                 std::move(contact->vcard_), UserId(contact->user_id_));
+}
+
+Result<Contact> process_input_message_contact(tl_object_ptr<td_api::InputMessageContent> &&input_message_content) {
+  CHECK(input_message_content != nullptr);
+  CHECK(input_message_content->get_id() == td_api::inputMessageContact::ID);
+  return get_contact(std::move(static_cast<td_api::inputMessageContact *>(input_message_content.get())->contact_));
 }
 
 }  // namespace td
diff --git a/td/telegram/Contact.h b/td/telegram/Contact.h
index 5ab981018..924555406 100644
--- a/td/telegram/Contact.h
+++ b/td/telegram/Contact.h
@@ -46,7 +46,11 @@ class Contact {
 
   UserId get_user_id() const;
 
-  string get_phone_number() const;
+  const string &get_phone_number() const;
+
+  const string &get_first_name() const;
+
+  const string &get_last_name() const;
 
   tl_object_ptr<td_api::contact> get_contact_object() const;
 
@@ -139,6 +143,8 @@ struct ContactHash {
   }
 };
 
+Result<Contact> get_contact(td_api::object_ptr<td_api::contact> &&contact) TD_WARN_UNUSED_RESULT;
+
 Result<Contact> process_input_message_contact(tl_object_ptr<td_api::InputMessageContent> &&input_message_content)
     TD_WARN_UNUSED_RESULT;
 
diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 66474f957..0adb385ff 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -444,15 +444,16 @@ class AddContactQuery final : public Td::ResultHandler {
   explicit AddContactQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
   }
 
-  void send(UserId user_id, tl_object_ptr<telegram_api::InputUser> &&input_user, const string &first_name,
-            const string &last_name, const string &phone_number, bool share_phone_number) {
+  void send(UserId user_id, tl_object_ptr<telegram_api::InputUser> &&input_user, const Contact &contact,
+            bool share_phone_number) {
     user_id_ = user_id;
     int32 flags = 0;
     if (share_phone_number) {
       flags |= telegram_api::contacts_addContact::ADD_PHONE_PRIVACY_EXCEPTION_MASK;
     }
-    send_query(G()->net_query_creator().create(telegram_api::contacts_addContact(
-        flags, false /*ignored*/, std::move(input_user), first_name, last_name, phone_number)));
+    send_query(G()->net_query_creator().create(
+        telegram_api::contacts_addContact(flags, false /*ignored*/, std::move(input_user), contact.get_first_name(),
+                                          contact.get_last_name(), contact.get_phone_number())));
   }
 
   void on_result(uint64 id, BufferSlice packet) final {
@@ -5324,12 +5325,7 @@ void ContactsManager::reload_contacts(bool force) {
   }
 }
 
-void ContactsManager::add_contact(td_api::object_ptr<td_api::contact> &&contact, bool share_phone_number,
-                                  Promise<Unit> &&promise) {
-  if (contact == nullptr) {
-    return promise.set_error(Status::Error(400, "Added contact must be non-empty"));
-  }
-
+void ContactsManager::add_contact(Contact contact, bool share_phone_number, Promise<Unit> &&promise) {
   if (G()->close_flag()) {
     return promise.set_error(Status::Error(500, "Request aborted"));
   }
@@ -5342,17 +5338,16 @@ void ContactsManager::add_contact(td_api::object_ptr<td_api::contact> &&contact,
     return;
   }
 
-  LOG(INFO) << "Add " << oneline(to_string(contact)) << " with share_phone_number = " << share_phone_number;
+  LOG(INFO) << "Add " << contact << " with share_phone_number = " << share_phone_number;
 
-  UserId user_id{contact->user_id_};
+  auto user_id = contact.get_user_id();
   auto input_user = get_input_user(user_id);
   if (input_user == nullptr) {
     return promise.set_error(Status::Error(400, "User not found"));
   }
 
   td_->create_handler<AddContactQuery>(std::move(promise))
-      ->send(user_id, std::move(input_user), contact->first_name_, contact->last_name_, contact->phone_number_,
-             share_phone_number);
+      ->send(user_id, std::move(input_user), contact, share_phone_number);
 }
 
 std::pair<vector<UserId>, vector<int32>> ContactsManager::import_contacts(
diff --git a/td/telegram/ContactsManager.h b/td/telegram/ContactsManager.h
index dec95fcc3..49e615675 100644
--- a/td/telegram/ContactsManager.h
+++ b/td/telegram/ContactsManager.h
@@ -288,7 +288,7 @@ class ContactsManager final : public Actor {
   void disconnect_website(int64 authorizations_id, Promise<Unit> &&promise) const;
   void disconnect_all_websites(Promise<Unit> &&promise) const;
 
-  void add_contact(td_api::object_ptr<td_api::contact> &&contact, bool share_phone_number, Promise<Unit> &&promise);
+  void add_contact(Contact contact, bool share_phone_number, Promise<Unit> &&promise);
 
   std::pair<vector<UserId>, vector<int32>> import_contacts(const vector<tl_object_ptr<td_api::contact>> &contacts,
                                                            int64 &random_id, Promise<Unit> &&promise);
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index aa16a4968..526b909d4 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -6645,14 +6645,12 @@ void Td::on_request(uint64 id, const td_api::getBlockedMessageSenders &request)
 
 void Td::on_request(uint64 id, td_api::addContact &request) {
   CHECK_IS_USER();
-  if (request.contact_ == nullptr) {
-    return send_error_raw(id, 400, "Contact must be non-empty");
+  auto r_contact = get_contact(std::move(request.contact_));
+  if (r_contact.is_error()) {
+    return send_closure(actor_id(this), &Td::send_error, id, r_contact.move_as_error());
   }
-  CLEAN_INPUT_STRING(request.contact_->phone_number_);
-  CLEAN_INPUT_STRING(request.contact_->first_name_);
-  CLEAN_INPUT_STRING(request.contact_->last_name_);
   CREATE_OK_REQUEST_PROMISE();
-  contacts_manager_->add_contact(std::move(request.contact_), request.share_phone_number_, std::move(promise));
+  contacts_manager_->add_contact(r_contact.move_as_ok(), request.share_phone_number_, std::move(promise));
 }
 
 void Td::on_request(uint64 id, td_api::importContacts &request) {