FolderListModel with showDirs set to false fails to filter out all directories

import QtQuick 1.0
import Qt.labs.folderlistmodel 1.0

Rectangle {
    width: 360
    height: 640

    FolderListModel {
        id: folderModel
        folder: "file:///c:/"
        showDirs: false
    }

    ListView {
        id: list
        model: folderModel
        anchors {
            top: parent.top
            left: parent.left
            right: parent.right
            bottom: button.top
        }
        delegate: Rectangle {
            width: list.width
            height: 60
            Text{
                anchors.centerIn: parent
                text: fileName

            }
        }
    }

    Rectangle {
        id: button
        anchors {
            left: parent.left
            right: parent.right
            bottom: parent.bottom
        }
        height: 60
        color: "blue"
        MouseArea {
            anchors.fill: parent
            onClicked: {
                if (folderModel.folder == "file:///c:/code/") {
                    folderModel.folder = "file:///c:/"
                } else {
                    folderModel.folder = "file:///c:/code/"
                }
            }
        }
    }
}