diff --git a/Telegram/SourceFiles/application.h b/Telegram/SourceFiles/application.h
index f3ccc9d16..d9ea37f0b 100644
--- a/Telegram/SourceFiles/application.h
+++ b/Telegram/SourceFiles/application.h
@@ -20,6 +20,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 */
 #pragma once
 
+#include "stdafx.h"
 #include <QApplication>
 
 class UpdateChecker;