diff --git a/app/PlaYUVerSubWindowHandle.cpp b/app/PlaYUVerSubWindowHandle.cpp
index 1a0332f..78850ce 100644
--- a/app/PlaYUVerSubWindowHandle.cpp
+++ b/app/PlaYUVerSubWindowHandle.cpp
@@ -30,6 +30,7 @@
 #include <QMdiArea>
 #include <QMenu>
 #include <QPainter>
+#include <QSettings>
 #include <QSignalMapper>
 #include <QStyle>