diff --git a/src/widgets/widgets/qmdiarea.cpp b/src/widgets/widgets/qmdiarea.cpp
index 5c1d7a6c052..ea33f40806e 100644
--- a/src/widgets/widgets/qmdiarea.cpp
+++ b/src/widgets/widgets/qmdiarea.cpp
@@ -1120,10 +1120,9 @@ void QMdiAreaPrivate::updateActiveWindow(int removedIndex, bool activeRemoved)
 
 #ifndef QT_NO_TABBAR
     if (tabBar && removedIndex >= 0) {
-        tabBar->blockSignals(true);
+        const QSignalBlocker blocker(tabBar);
         tabBar->removeTab(removedIndex);
         updateTabBarGeometry();
-        tabBar->blockSignals(false);
     }
 #endif