diff --git a/src/corelib/kernel/qproperty_p.h b/src/corelib/kernel/qproperty_p.h
index 9185c939c6..1193e3e1d2 100644
--- a/src/corelib/kernel/qproperty_p.h
+++ b/src/corelib/kernel/qproperty_p.h
@@ -334,7 +334,7 @@ class QObjectCompatProperty : public QPropertyData<T>
         char *that = const_cast<char *>(reinterpret_cast<const char *>(this));
         return reinterpret_cast<Class *>(that - QtPrivate::detail::getOffset(Offset));
     }
-    static bool bindingWrapper(QMetaType type, QUntypedPropertyData *dataPtr, QtPrivate::QPropertyBindingFunction binding)
+    static bool bindingWrapper(QMetaType type, QUntypedPropertyData *dataPtr, const QtPrivate::QPropertyBindingFunction &binding)
     {
         auto *thisData = static_cast<ThisType *>(dataPtr);
         QPropertyData<T> copy;
diff --git a/src/corelib/kernel/qpropertyprivate.h b/src/corelib/kernel/qpropertyprivate.h
index d03b174a41..158fdbabb4 100644
--- a/src/corelib/kernel/qpropertyprivate.h
+++ b/src/corelib/kernel/qpropertyprivate.h
@@ -77,7 +77,7 @@ namespace QtPrivate {
 // writes binding result into dataPtr
 using QPropertyBindingFunction = std::function<bool(QMetaType metaType, QUntypedPropertyData *dataPtr)>;
 using QPropertyObserverCallback = void (*)(QUntypedPropertyData *);
-using QPropertyBindingWrapper = bool(*)(QMetaType, QUntypedPropertyData *dataPtr, QPropertyBindingFunction);
+using QPropertyBindingWrapper = bool(*)(QMetaType, QUntypedPropertyData *dataPtr, const QPropertyBindingFunction &);
 
 class Q_CORE_EXPORT QPropertyBindingData
 {