1 files changed, 2 insertions, 2 deletions
diff --git a/src/corelib/kernel/qobject_p.h b/src/corelib/kernel/qobject_p.h
index 7cc82d4f71..a260ed680e 100644
--- a/src/corelib/kernel/qobject_p.h
+++ b/src/corelib/kernel/qobject_p.h
@@ -79,9 +79,9 @@ struct QSignalSpyCallbackSet
     EndCallback signal_end_callback,
                 slot_end_callback;
 };
-void Q_CORE_EXPORT qt_register_signal_spy_callbacks(const QSignalSpyCallbackSet &callback_set);
+void Q_CORE_EXPORT qt_register_signal_spy_callbacks(QSignalSpyCallbackSet *callback_set);
 
-extern QSignalSpyCallbackSet Q_CORE_EXPORT qt_signal_spy_callback_set;
+extern Q_CORE_EXPORT QBasicAtomicPointer<QSignalSpyCallbackSet> qt_signal_spy_callback_set;
 
 enum { QObjectPrivateVersion = QT_VERSION };