Abstract: The invention is based on the problem of creating an additional device to act as a “secondary emergency device” in the case that one or more standard emergency devices fail to adjust the blade angle of one or multiple rotor blades into a position of power limitation. The method of braking a wind turbine in an emergency by adjusting the rotor blades for wind turbines with power control via the principle of pitch control or active stall control and of holding the position of a rotor blade for each rotor blade with at least one actuator and at least one holding brake is a redundant measure for an emergency. This enables one or more holding brakes to open depending on the rotor-blade direction that is required and to close or to be kept closed when an adjustment of a rotor-blade direction is not desired.