Index: App/CanvasAppliance.cpp
--- App/CanvasAppliance.cpp.orig
+++ App/CanvasAppliance.cpp
@@ -30,6 +30,7 @@
 #include "Settings.h"
 #include "Workflow.h"
 
+#include <QButtonGroup>
 #include <QDesktopWidget>
 #include <QFileDialog>
 #include <QInputDialog>
