Q_ENUMS doesn't register negative enums

#ifndef TEST_H
#define TEST_H

#include <QtCore>

class Test : public QObject
{
    Q_OBJECT
public:
    enum MyEnum {
        Foo = -1,
        Foo0 = 0,
        Foo1 = 1
    };

    Q_ENUMS(MyEnum)
};

#endif // TEST_H

#include <QtGui>
#include <QtDeclarative>
#include "test.h"

int main(int argc, char **argv) {
    QApplication app(argc, argv);

    qmlRegisterType<Test>("mylib", 1, 0, "Test");
    QDeclarativeView v;
    v.setSource(QString("test.qml"));
    v.show();

    return app.exec();
}

import QtQuick 1.0
import mylib 1.0

Rectangle {
    width: 100
    height: 62

    Component.onCompleted: {
        console.log("Enum: " + Test.Foo + " " + Test.Foo0 + " " + Test.Foo1);
    }
}