Svg Text Paths are not rendered in QGraphicsSvgItem

#include <QtGui>
#include <QtSvg/QGraphicsSvgItem>

int main(int argc, char *argv[]) {
  QApplication app(argc, argv);
  QGraphicsScene *scene = new QGraphicsScene;
  scene->addText("Do you see the text following the path, or just the path?");
  QGraphicsSvgItem *svg = new QGraphicsSvgItem(":/image/curved_text.svg");
  scene->addItem(svg);
  QGraphicsView view(scene);
  view.show();
  return app.exec();
}