diff --git a/src/QGCApplication.h b/src/QGCApplication.h
index b74dd003fcd6c8cf4ba13da85bd7034ed8d27bf8..e645e624704d5207b35660726c5765897172a3d7 100644
--- a/src/QGCApplication.h
+++ b/src/QGCApplication.h
@@ -34,6 +34,7 @@
 
 #include <QApplication>
 #include <QTimer>
+#include <QQmlApplicationEngine>
 
 #include "LinkConfiguration.h"
 #include "LinkManager.h"