diff --git a/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp b/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp
index be9db84272..962245fa4c 100644
--- a/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp
+++ b/src/plugins/qmltooling/qmldbg_debugger/qqmlenginedebugservice.cpp
@@ -196,7 +196,7 @@ QQmlEngineDebugServiceImpl::propertyData(QObject *obj, int propIdx)
 
     rv.value = valueContents(prop.read(obj));
 
-    if (QQmlMetaType::isQObject(prop.userType()))  {
+    if (prop.metaType().flags().testFlag(QMetaType::PointerToQObject))  {
         rv.type = QQmlObjectProperty::Object;
     } else if (QQmlMetaType::isList(prop.userType())) {
         rv.type = QQmlObjectProperty::List;
@@ -275,7 +275,7 @@ QVariant QQmlEngineDebugServiceImpl::valueContents(QVariant value) const
             return value;
     }
 
-    if (QQmlMetaType::isQObject(metaTypeId)) {
+    if (metaType.flags().testFlag(QMetaType::PointerToQObject)) {
         QObject *o = QQmlMetaType::toQObject(value);
         if (o) {
             QString name = o->objectName();
diff --git a/src/qml/qml/qqmlmetatype.cpp b/src/qml/qml/qqmlmetatype.cpp
index 8369634889..71abce89b1 100644
--- a/src/qml/qml/qqmlmetatype.cpp
+++ b/src/qml/qml/qqmlmetatype.cpp
@@ -1099,14 +1099,6 @@ QObject *QQmlMetaType::toQObject(const QVariant &v, bool *ok)
     return *(QObject *const *)v.constData();
 }
 
-bool QQmlMetaType::isQObject(int userType)
-{
-    if (userType == QMetaType::QObjectStar)
-        return true;
-    QMetaType type (userType);
-    return type.flags().testFlag(QMetaType::PointerToQObject);
-}
-
 /*
     Returns the item type for a list of type \a id.
  */
diff --git a/src/qml/qml/qqmlmetatype_p.h b/src/qml/qml/qqmlmetatype_p.h
index e0b43c6c52..d1735902f5 100644
--- a/src/qml/qml/qqmlmetatype_p.h
+++ b/src/qml/qml/qqmlmetatype_p.h
@@ -187,7 +187,6 @@ public:
     static QMetaMethod defaultMethod(const QMetaObject *);
     static QMetaMethod defaultMethod(QObject *);
 
-    static bool isQObject(int);
     static QObject *toQObject(const QVariant &, bool *ok = nullptr);
 
     static int listType(int);
diff --git a/src/quick/designer/qquickdesignersupportitems.cpp b/src/quick/designer/qquickdesignersupportitems.cpp
index 1797bd3ccf..987e8fd922 100644
--- a/src/quick/designer/qquickdesignersupportitems.cpp
+++ b/src/quick/designer/qquickdesignersupportitems.cpp
@@ -115,7 +115,7 @@ static void allSubObjects(QObject *object, QObjectList &objectList)
         // search recursive in property objects
         if (metaProperty.isReadable()
                 && metaProperty.isWritable()
-                && QQmlMetaType::isQObject(metaProperty.userType())) {
+                && metaProperty.metaType().flags().testFlag(QMetaType::PointerToQObject)) {
             if (qstrcmp(metaProperty.name(), "parent")) {
                 QObject *propertyObject = QQmlMetaType::toQObject(metaProperty.read(object));
                 allSubObjects(propertyObject, objectList);
diff --git a/src/quick/designer/qquickdesignersupportproperties.cpp b/src/quick/designer/qquickdesignersupportproperties.cpp
index bbbb8a43b4..c9b042a1ef 100644
--- a/src/quick/designer/qquickdesignersupportproperties.cpp
+++ b/src/quick/designer/qquickdesignersupportproperties.cpp
@@ -112,7 +112,7 @@ void QQuickDesignerSupportProperties::keepBindingFromGettingDeleted(QObject *obj
 
 bool QQuickDesignerSupportProperties::isPropertyQObject(const QMetaProperty &metaProperty)
 {
-    return QQmlMetaType::isQObject(metaProperty.userType());
+    return metaProperty.metaType().flags().testFlag(QMetaType::PointerToQObject);
 }
 
 
diff --git a/tools/qmlplugindump/main.cpp b/tools/qmlplugindump/main.cpp
index e5da5c59aa..9ee6db39da 100644
--- a/tools/qmlplugindump/main.cpp
+++ b/tools/qmlplugindump/main.cpp
@@ -157,7 +157,7 @@ void collectReachableMetaObjects(QObject *object, QSet<const QMetaObject *> *met
 
     for (int index = 0; index < meta->propertyCount(); ++index) {
         QMetaProperty prop = meta->property(index);
-        if (QQmlMetaType::isQObject(prop.userType())) {
+        if (prop.metaType().flags().testFlag(QMetaType::PointerToQObject)) {
             if (verbose)
                 std::cerr << "  Processing property " << qPrintable( prop.name() ) << std::endl;
             currentProperty = QString("%1::%2").arg(meta->className(), prop.name());