diff --git a/src/qt/trafficgraphwidget.h b/src/qt/trafficgraphwidget.h
--- a/src/qt/trafficgraphwidget.h
+++ b/src/qt/trafficgraphwidget.h
@@ -12,6 +12,7 @@
 
 QT_BEGIN_NAMESPACE
 class QPaintEvent;
+class QPainterPath;
 class QTimer;
 QT_END_NAMESPACE
 
diff --git a/src/qt/trafficgraphwidget.cpp b/src/qt/trafficgraphwidget.cpp
--- a/src/qt/trafficgraphwidget.cpp
+++ b/src/qt/trafficgraphwidget.cpp
@@ -9,6 +9,7 @@
 
 #include <QColor>
 #include <QPainter>
+#include <QPainterPath>
 #include <QTimer>
 
 #include <cmath>