--- a/src/SkewT.h	2019-07-05 11:01:01.000000000 +0200
+++ b/src/SkewT.h	2020-07-28 16:08:15.572570312 +0200
@@ -16,6 +16,7 @@
 #include <QMainWindow>
 #include <QFrame>
 #include <QPainter>
+#include <QPainterPath>
 #include <QLayout>
 #include <QKeyEvent>
 #include <QPrintDialog>
