Disc brake of the self-energizing type, comprising: a) a hydraulic system internal in the brake, which is provided with a reservoir circuit and an expansion tank; b) a brake application device including at least one brake application cylinder for applying at least one brake lining (3, 3') in a direction towards a brake disc; c) at least one power transmitter unit supporting said at least one brake lining (3, 3') at a wedge angle on said brake application device; d) at least one cylinder receiving a tangential force for the changeover of the wedge angle, that is operatively connected to said at least one power transmitter unit; e) an electromotive actuator that acts on said brake application device via said hydraulic system; f) a distributor cylinder for the amplification of the pressure, which is disposed in series between said electromotive actuator and said brake application device; and g) a controller unit that is disposed between said cylinder receiving a tangential power and said electromotive actuator for control of the change-over of the wedge angle, h) a parking brake means provided with an adjustable screw spindle for adjustment of said at least one brake lining (3, 3'), with said adjustable screw spindle being adapted for coupling to said electromotive actuator for driving, and wherein said at least one cylinder receiving a tangential force is adapted to be hydraulically communicated with said reservoir circuit and said expansion tank, characterised in (i) that said parking brake means comprises an adjustment piston that is hydraulically adjustable in said cylinder receiving a tangential force in the course of tracking of said at least one brake lining (3, 3'). a) a hydraulic system internal in the brake, which is provided with a reservoir circuit and an expansion tank; b) a brake application device including at least one brake application cylinder for applying at least one brake lining (3, 3') in a direction towards a brake disc; c) at least one power transmitter unit supporting said at least one brake lining (3, 3') at a wedge angle on said brake application device; d) at least one cylinder receiving a tangential force for the changeover of the wedge angle, that is operatively connected to said at least one power transmitter unit; e) an electromotive actuator that acts on said brake application device via said hydraulic system; f) a distributor cylinder for the amplification of the pressure, which is disposed in series between said electromotive actuator and said brake application device; and g) a controller unit that is disposed between said cylinder receiving a tangential power and said electromotive actuator for control of the change-over of the wedge angle, h) a parking brake means provided with an adjustable screw spindle for adjustment of said at least one brake lining (3, 3'), with said adjustable screw spindle being adapted for coupling to said electromotive actuator for driving, and wherein said at least one cylinder receiving a tangential force is adapted to be hydraulically communicated with said reservoir circuit and said expansion tank, characterised in (i) that said parking brake means comprises an adjustment piston that is hydraulically adjustable in said cylinder receiving a tangential force in the course of tracking of said at least one brake lining (3, 3').