diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp
index 921d3db..16cdce9 100755
--- a/pv/view/viewport.cpp
+++ b/pv/view/viewport.cpp
@@ -37,7 +37,7 @@
 
 #include <QMouseEvent>
 #include <QStyleOption>
-
+#include <QPainterPath>
 
 #include <math.h>