diff --git a/extenders/extenderitem.cpp b/extenders/extenderitem.cpp
index b4c4b22a4..1936c862a 100644
--- a/extenders/extenderitem.cpp
+++ b/extenders/extenderitem.cpp
@@ -517,6 +517,10 @@ void ExtenderItem::setCollapsed(bool collapsed)
         } else {
             d->layout->insertItem(1, d->widget);
         }
+        QGraphicsWidget *pw = qgraphicsitem_cast<QGraphicsWidget *>(parentItem());
+        if (pw) {
+            pw->resize(pw->effectiveSizeHint(Qt::PreferredSize));
+        }
     }
 }