The invention relates to a method for determining an estimated transfer function of an acoustic feedback path during fitting of a hearing device, which receives acoustic signals from an individual's surroundings, modifies the acoustic signals electronically and transmits the modified acoustic signals into the individual's ear or ear canal. In order to save resources in the hearing device, the hearing device reuses a start-up jingle for determining an estimated transfer function during a fitting session upon reception of a predefined message from a fitting apparatus.