--- json/Backend.hpp	2015-11-24 12:34:41.587916006 +0600
+++ json/Backend.hpp	2015-11-24 12:37:37.116832634 +0600
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <QObject>
 #include <QStringList>
 
 class Backend : public QObject