diff --git a/src/stepvis.cpp b/src/stepvis.cpp
index 5f04a88..042d366 100644
--- a/src/stepvis.cpp
+++ b/src/stepvis.cpp
@@ -41,6 +41,7 @@
 #include <QLocale>
 #include <QMouseEvent>
 #include <QWheelEvent>
+#include <QPainterPath> 
 
 #include "function.h"