diff --git a/src/corelib/kernel/qmetaobjectbuilder.cpp b/src/corelib/kernel/qmetaobjectbuilder.cpp
index 8513805ef4..8bcc6e398a 100644
--- a/src/corelib/kernel/qmetaobjectbuilder.cpp
+++ b/src/corelib/kernel/qmetaobjectbuilder.cpp
@@ -224,7 +224,7 @@ public:
     QList<QByteArray> classInfoValues;
     std::vector<QMetaEnumBuilderPrivate> enumerators;
     QList<const QMetaObject *> relatedMetaObjects;
-    int flags;
+    MetaObjectFlags flags;
 };
 
 bool QMetaObjectBuilderPrivate::hasRevisionedMethods() const
@@ -325,7 +325,7 @@ void QMetaObjectBuilder::setSuperClass(const QMetaObject *meta)
 */
 MetaObjectFlags QMetaObjectBuilder::flags() const
 {
-    return MetaObjectFlags(d->flags);
+    return d->flags;
 }
 
 /*!
@@ -1205,7 +1205,7 @@ static int buildMetaObject(QMetaObjectBuilderPrivate *d, char *buf,
     if constexpr (mode == Construct) {
         static_assert(QMetaObjectPrivate::OutputRevision == 10, "QMetaObjectBuilder should generate the same version as moc");
         pmeta->revision = QMetaObjectPrivate::OutputRevision;
-        pmeta->flags = d->flags;
+        pmeta->flags = d->flags.toInt();
         pmeta->className = 0;   // Class name is always the first string.
         //pmeta->signalCount is handled in the "output method loop" as an optimization.