--- test-render-to-file.cpp	2017-08-27 12:14:37.000000000 +0200
+++ test-render-to-file-new.cpp	2017-09-08 17:15:06.000000000 +0200
@@ -1,7 +1,7 @@
 #include <QtCore/QDebug>
 #include <QtCore/QFile>
-#include <QGuiApplication>
-#include <QImage>
+#include <QtGui/QGuiApplication>
+#include <QtGui/QImage>
 
 #include <poppler-qt5.h>