diff --git a/Telegram/SourceFiles/intro/introwidget.cpp b/Telegram/SourceFiles/intro/introwidget.cpp
index c4ecd3a40..a24c8e084 100644
--- a/Telegram/SourceFiles/intro/introwidget.cpp
+++ b/Telegram/SourceFiles/intro/introwidget.cpp
@@ -424,7 +424,7 @@ void Widget::Step::finish(const MTPUser &user, QImage photo) {
 	}
 
 	Messenger::Instance().authSessionCreate(user.c_user().vid.v);
-
+	Local::writeMtpData();
 	App::wnd()->setupMain(&user);
 
 	// "this" is already deleted here by creating the main widget.
diff --git a/Telegram/SourceFiles/messenger.cpp b/Telegram/SourceFiles/messenger.cpp
index 5ad035d5e..dc8f4b71d 100644
--- a/Telegram/SourceFiles/messenger.cpp
+++ b/Telegram/SourceFiles/messenger.cpp
@@ -195,9 +195,12 @@ QByteArray Messenger::serializeMtpAuthorization() const {
 			QDataStream stream(&buffer);
 			stream.setVersion(QDataStream::Qt_5_1);
 
-			stream << qint32(AuthSession::Exists() ? AuthSession::CurrentUserId() : 0) << qint32(mainDcId);
+			auto currentUserId = AuthSession::Exists() ? AuthSession::CurrentUserId() : 0;
+			stream << qint32(currentUserId) << qint32(mainDcId);
 			writeKeys(stream, keys);
 			writeKeys(stream, keysToDestroy);
+
+			DEBUG_LOG(("MTP Info: Keys written, userId: %1, dcId: %2").arg(currentUserId).arg(mainDcId));
 		}
 		return result;
 	};