diff --git a/src/SkewT.h b/src/SkewT.h
index c9a23ce..0916681 100644
--- a/src/SkewT.h
+++ b/src/SkewT.h
@@ -31,6 +31,7 @@
 #include <QCheckBox>
 #include <QThread>
 #include <QMessageBox>
+#include <QPainterPath>
 
 class SkewT;