SVG images are blurry

QtQuick.Item {
    id: _baseSVGImage

    property alias svgImage: _svgImage

    property real margins: 0

    QtQuick.Image {
        id: _svgImage

        anchors {
            fill: parent
            margins: _baseSVGImage.margins
        }

        sourceSize.height: height * QtQuick_Window.Screen.devicePixelRatio
        sourceSize.width: width * QtQuick_Window.Screen.devicePixelRatio

        fillMode: QtQuick.Image.PreserveAspectFit
    }
}