diff --git a/qrenderdoc/Widgets/CustomPaintWidget.cpp b/qrenderdoc/Widgets/CustomPaintWidget.cpp
index a30e1f9ac..eb3a23872 100644
--- a/qrenderdoc/Widgets/CustomPaintWidget.cpp
+++ b/qrenderdoc/Widgets/CustomPaintWidget.cpp
@@ -24,6 +24,7 @@
 
 #include "CustomPaintWidget.h"
 #include <math.h>
+#include <QEvent>
 #include <QPainter>
 #include "Code/Interface/QRDInterface.h"