--- a/QTfrontend/net/proto.h	Wed Jan 24 21:05:34 2018 +0100
+++ b/QTfrontend/net/proto.h	Wed Jan 24 22:20:10 2018 +0100
@@ -22,7 +22,7 @@
 #include <QByteArray>
 #include <QString>
 #include <QStringList>
-
+#include <QObject>
 
 class HWProto : public QObject
 {