diff -r 111c4d750c6d -r ef9630519491 qmlfrontend/game_view.h
--- a/qmlfrontend/game_view.h	Fri Apr 26 23:21:27 2019 +0200
+++ b/qmlfrontend/game_view.h	Fri Apr 26 23:21:58 2019 +0200
@@ -35,7 +35,7 @@
                  setEngineInstance NOTIFY engineInstanceChanged)
 
  public:
-  explicit GameView();
+  explicit GameView(QQuickItem* parent = nullptr);
 
   Q_INVOKABLE void tick(quint32 delta);