--- a/src/VBox/Frontends/VirtualBox/src/widgets/graphics/UIGraphicsScrollBar.cpp 2020-05-30 00:40:22.314155286 +0300
+++ b/src/VBox/Frontends/VirtualBox/src/widgets/graphics/UIGraphicsScrollBar.cpp 2020-05-30 00:41:56.544157111 +0300
@@ -28,6 +28,7 @@
 #include <QStyleOptionGraphicsItem>
 #include <QTimer>
 #include <QTimerEvent>
+#include <QPainterPath>
 
 /* GUI includes: */
 #include "UIGraphicsButton.h"