diff --git a/src/corelib/kernel/qobject.h b/src/corelib/kernel/qobject.h
index a0d8076b735..3729dc8c0d8 100644
--- a/src/corelib/kernel/qobject.h
+++ b/src/corelib/kernel/qobject.h
@@ -106,7 +106,7 @@ public:
     uint inEventHandler : 1; //only used if QT_JAMBI_BUILD
     uint inThreadChangeEvent : 1;
     uint isWindow : 1; //for QWindow
-    uint unused : 22;
+    uint unused : 21;
     int postedEvents;
     QMetaObject *metaObject; // assert dynamic
 };