diff --git a/examples/gui/rasterwindow/rasterwindow.cpp b/examples/gui/rasterwindow/rasterwindow.cpp
index 68d1d7f524b..3eacd201455 100644
--- a/examples/gui/rasterwindow/rasterwindow.cpp
+++ b/examples/gui/rasterwindow/rasterwindow.cpp
@@ -111,6 +111,7 @@ void RasterWindow::renderNow()
 
     painter.fillRect(0, 0, width(), height(), Qt::white);
     render(&painter);
+    painter.end();
 
     m_backingStore->endPaint();
     m_backingStore->flush(rect);