diff --git a/widgets/tabbar.cpp b/widgets/tabbar.cpp
index d655e7d9e..7bbc2c981 100644
--- a/widgets/tabbar.cpp
+++ b/widgets/tabbar.cpp
@@ -271,7 +271,7 @@ int TabBar::currentIndex() const
 void TabBar::resizeEvent(QGraphicsSceneResizeEvent * event)
 {
     if (!d->isTabWidget) {
-        d->tabProxy->native->setMinimumSize(contentsRect().size().toSize());
+        d->tabProxy->native->setMinimumSize(event->newSize().toSize());
     } else {
         d->tabProxy->native->setMinimumSize(QSize(0,0));
     }