diff --git a/modules/highgui/src/window_QT.cpp b/modules/highgui/src/window_QT.cpp
index 02b4f70595..b96d7cb06f 100644
--- a/modules/highgui/src/window_QT.cpp
+++ b/modules/highgui/src/window_QT.cpp
@@ -1848,7 +1848,7 @@ bool CvWindow::isOpenGl()
 
 void CvWindow::setViewportSize(QSize _size)
 {
-    myView->getWidget()->resize(_size);
+    resize(_size);
     myView->setSize(_size);
 }