CalendarModel conflict

import QtQuick 2.6
import QtQuick.Controls 1.2
import Qt.labs.calendar 1.0 as LC

ApplicationWindow {
    visible: true
    Calendar { }
}

QQmlApplicationEngine failed to load component
qrc:/main.qml:7 Type Calendar unavailable
file:///Users/jpnurmi/Qt/5.6/clang_64/qml/QtQuick/Controls/Calendar.qml:216 Cannot assign object to property

property CalendarModel __model: CalendarModel { // <== line 216
    locale: calendar.__locale
    visibleDate: new Date(visibleYear, visibleMonth, 1)
}