Method for suppressing acoustic feedback in a hearing aid device, wherein the hearing aid device has an acoustoelectric input transducer, signal processing and an electroacoustic output transducer and wherein the method exhibits the steps: dividing an acoustic frequency range transmitted by the hearing aid device into a first frequency range above a first split-band frequency and a second frequency range below the first split-band frequency; estimating a first transfer function as mapping of a real transfer function of a feedback loop via the electroacoustic output transducer, an acoustic feedback path, the acoustoelectric input transducer and the signal processing in the first frequency range; assessing the first transfer function, with regard to a predetermined limit value, as to whether a transgression of the predetermined limit value by the real transfer function is to be expected from the behavior of the first transfer function in an environment of the first split-band frequency; increasing the first split-band frequency to a second split-band frequency if a transgression of the predetermined limit value by the real transfer function is not to be expected in the environment of the first split-band frequency, so that all the values of a gain of the first transfer function for frequencies less than the increased second split-band frequency are less than the predetermined limit value or reducing the first split-band frequency to a second split-band frequency if a transgression of the predetermined limit value by the real transfer function is to be expected in the environment of the first split-band frequency, and applying a phase or frequency change for feedback suppression in the signal processing only above an inception frequency in dependence on the second split-band frequency, characterized in that in step a transgression of the predetermined limit value by the real transfer function is to be expected in the environment of the fist split-band frequency if the first transfer function rises toward the first split-band frequency, or wherein in step a second transfer function of the closed feedback loop is determined in a third frequency range below the first split-band frequency in dependence on the first transfer function of the closed feedback loop and a transgression of the predetermined limit value by the real transfer function is to be expected in the environment of the first split-band frequency if the second transfer function exceeds the predetermined limit value in the third frequency range. dividing an acoustic frequency range transmitted by the hearing aid device into a first frequency range above a first split-band frequency and a second frequency range below the first split-band frequency; estimating a first transfer function as mapping of a real transfer function of a feedback loop via the electroacoustic output transducer, an acoustic feedback path, the acoustoelectric input transducer and the signal processing in the first frequency range; assessing the first transfer function, with regard to a predetermined limit value, as to whether a transgression of the predetermined limit value by the real transfer function is to be expected from the behavior of the first transfer function in an environment of the first split-band frequency; increasing the first split-band frequency to a second split-band frequency if a transgression of the predetermined limit value by the real transfer function is not to be expected in the environment of the first split-band frequency, so that all the values of a gain of the first transfer function for frequencies less than the increased second split-band frequency are less than the predetermined limit value or reducing the first split-band frequency to a second split-band frequency if a transgression of the predetermined limit value by the real transfer function is to be expected in the environment of the first split-band frequency, and applying a phase or frequency change for feedback suppression in the signal processing only above an inception frequency in dependence on the second split-band frequency,