A method for the arrangement of a retaining ring (10) for holding a light source in the opening (11) of a reflector (12) for a vehicle headlamp. The retaining ring (10) extends in a plane and is arranged on the back side flush with the opening (11) on the reflector (12). For the arrangement of the retaining ring (10) of the reflector (12), a molded retainer part (13) is arranged on the reflector (12) and a recess (14) is formed in the retaining ring (10). The retaining ring (10) is placed on the reflector (12), so that the molded retainer part (13) is guided through the recess (14), after which the retaining ring (10) is turned in the plane of its extent about the molded retainer part (13), so that the retaining ring (10) clamps on the molded retainer part (13).