diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index 48fc5284a..8a11e9c8a 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -440,10 +440,13 @@ void Application::setMtpAuthorization(const QByteArray &serialized) {
 void Application::startMtp() {
 	Expects(!_mtproto);
 
+	auto config = base::take(_private->mtpConfig);
+	config.deviceModel = _launcher->deviceModel();
+	config.systemVersion = _launcher->systemVersion();
 	_mtproto = std::make_unique<MTP::Instance>(
 		_dcOptions.get(),
 		MTP::Instance::Mode::Normal,
-		base::take(_private->mtpConfig));
+		std::move(config));
 	_mtproto->setUserPhone(cLoggedPhoneNumber());
 	_private->mtpConfig.mainDcId = _mtproto->mainDcId();
 
@@ -526,7 +529,12 @@ void Application::destroyMtpKeys(MTP::AuthKeysList &&keys) {
 	auto destroyConfig = MTP::Instance::Config();
 	destroyConfig.mainDcId = MTP::Instance::Config::kNoneMainDc;
 	destroyConfig.keys = std::move(keys);
-	_mtprotoForKeysDestroy = std::make_unique<MTP::Instance>(_dcOptions.get(), MTP::Instance::Mode::KeysDestroyer, std::move(destroyConfig));
+	destroyConfig.deviceModel = _launcher->deviceModel();
+	destroyConfig.systemVersion = _launcher->systemVersion();
+	_mtprotoForKeysDestroy = std::make_unique<MTP::Instance>(
+		_dcOptions.get(),
+		MTP::Instance::Mode::KeysDestroyer,
+		std::move(destroyConfig));
 	connect(
 		_mtprotoForKeysDestroy.get(),
 		&MTP::Instance::allKeysDestroyed,
diff --git a/Telegram/SourceFiles/core/launcher.h b/Telegram/SourceFiles/core/launcher.h
index 53f865aa1..6060e96ff 100644
--- a/Telegram/SourceFiles/core/launcher.h
+++ b/Telegram/SourceFiles/core/launcher.h
@@ -24,7 +24,6 @@ public:
 	QString argumentsString() const;
 	bool customWorkingDir() const;
 
-	// Thread safe.
 	QString deviceModel() const;
 	QString systemVersion() const;
 	uint64 installationTag() const;
diff --git a/Telegram/SourceFiles/mtproto/connection.cpp b/Telegram/SourceFiles/mtproto/connection.cpp
index bdbc87fcc..555e51b4f 100644
--- a/Telegram/SourceFiles/mtproto/connection.cpp
+++ b/Telegram/SourceFiles/mtproto/connection.cpp
@@ -820,10 +820,10 @@ void ConnectionPrivate::tryToSend() {
 		const auto langPackName = _connectionOptions->langPackName;
 		const auto deviceModel = (_dcType == DcType::Cdn)
 			? "n/a"
-			: Core::App().launcher()->deviceModel();
+			: _instance->deviceModel();
 		const auto systemVersion = (_dcType == DcType::Cdn)
 			? "n/a"
-			: Core::App().launcher()->systemVersion();
+			: _instance->systemVersion();
 #if defined OS_MAC_STORE || defined OS_WIN_STORE
 		const auto appVersion = QString::fromLatin1(AppVersionStr)
 			+ " store";
diff --git a/Telegram/SourceFiles/mtproto/mtp_instance.cpp b/Telegram/SourceFiles/mtproto/mtp_instance.cpp
index 2056bd53a..587c2b60d 100644
--- a/Telegram/SourceFiles/mtproto/mtp_instance.cpp
+++ b/Telegram/SourceFiles/mtproto/mtp_instance.cpp
@@ -50,6 +50,10 @@ public:
 
 	not_null<DcOptions*> dcOptions();
 
+	// Thread safe.
+	QString deviceModel() const;
+	QString systemVersion() const;
+
 	void requestConfig();
 	void requestConfigIfOld();
 	void requestCDNConfig();
@@ -171,6 +175,9 @@ private:
 	bool _mainDcIdForced = false;
 	std::map<DcId, std::shared_ptr<internal::Dcenter>> _dcenters;
 
+	QString _deviceModel;
+	QString _systemVersion;
+
 	internal::Session *_mainSession = nullptr;
 	std::map<ShiftedDcId, std::unique_ptr<internal::Session>> _sessions;
 	std::vector<std::unique_ptr<internal::Session>> _killedSessions; // delayed delete
@@ -232,6 +239,9 @@ Instance::Private::Private(
 }
 
 void Instance::Private::start(Config &&config) {
+	_deviceModel = std::move(config.deviceModel);
+	_systemVersion = std::move(config.systemVersion);
+
 	if (isKeysDestroyer()) {
 		_instance->connect(_instance, SIGNAL(keyDestroyed(qint32)), _instance, SLOT(onKeyDestroyed(qint32)), Qt::QueuedConnection);
 	} else if (isNormal()) {
@@ -705,6 +715,14 @@ not_null<DcOptions*> Instance::Private::dcOptions() {
 	return _dcOptions;
 }
 
+QString Instance::Private::deviceModel() const {
+	return _deviceModel;
+}
+
+QString Instance::Private::systemVersion() const {
+	return _systemVersion;
+}
+
 void Instance::Private::unpaused() {
 	for (auto &session : _sessions) {
 		session.second->unpaused();
@@ -1638,6 +1656,14 @@ not_null<DcOptions*> Instance::dcOptions() {
 	return _private->dcOptions();
 }
 
+QString Instance::deviceModel() const {
+	return _private->deviceModel();
+}
+
+QString Instance::systemVersion() const {
+	return _private->systemVersion();
+}
+
 void Instance::unpaused() {
 	_private->unpaused();
 }
diff --git a/Telegram/SourceFiles/mtproto/mtp_instance.h b/Telegram/SourceFiles/mtproto/mtp_instance.h
index bc39e9d6e..fc574202b 100644
--- a/Telegram/SourceFiles/mtproto/mtp_instance.h
+++ b/Telegram/SourceFiles/mtproto/mtp_instance.h
@@ -35,6 +35,8 @@ public:
 
 		DcId mainDcId = kNotSetMainDc;
 		AuthKeysList keys;
+		QString deviceModel;
+		QString systemVersion;
 	};
 	enum class Mode {
 		Normal,
@@ -55,6 +57,10 @@ public:
 	QString cloudLangCode() const;
 	QString langPackName() const;
 
+	// Thread safe.
+	QString deviceModel() const;
+	QString systemVersion() const;
+
 	void setKeyForWrite(DcId dcId, const AuthKeyPtr &key);
 	AuthKeysList getKeysForWrite() const;
 	void addKeysForDestroy(AuthKeysList &&keys);