diff --git a/modules/highgui/src/window_QT.cpp b/modules/highgui/src/window_QT.cpp
index e79597948b..70f9e65e07 100644
--- a/modules/highgui/src/window_QT.cpp
+++ b/modules/highgui/src/window_QT.cpp
@@ -1875,7 +1875,7 @@ bool CvWindow::isOpenGl()
 
 void CvWindow::setViewportSize(QSize _size)
 {
-    myView->getWidget()->resize(_size);
+    resize(_size);
     myView->setSize(_size);
 }