A ring-shaped magnet arrangement for use in determining a rotational angle of a rotatable shaft. The ring-shaped magnet arrangement being connected to or formed as part of the rotatable shaft for co-rotation with the rotatable shaft around a rotational axis. The ring-shaped magnet arrangement includes a first ring portion including a first wedge surface and a second ring portion including a second wedge surface. The first wedge surface and the second wedge surface form a wedge in a sensor facing end of the ring-shaped magnet arrangement. The sensor facing end is axially opposite a radial end of the ring-shaped magnet arrangement.