Abstract: The device for centering a line in a rotating hollow shaft comprises a tube, the wall of which is slotted over the entire tube length, substantially parallel to the tube axis, and which can be deformed for the temporary widening of the slot for the radial introduction of a line into the tube. Bristle tufts distributed in the longitudinal and circumferential direction are arranged on the outer side of the tube for support on the inner wall of the rotating hollow shaft. In the wind turbine having a rotor rotatably supported on a gondola around a rotor shaft formed as a hollow shaft, wherein at least one line is led from the rotor through the rotor shaft to the gondola, the line guidance in the rotor shaft is implemented as an arrangement according to the invention.