An adjustment element for a divert-air valve. The adjustment element includes an actuation element which moves translatorily, and a control body which moves with the actuation element. The control body includes a first hollow body and a second hollow body. The first hollow body includes an outer surface which is circumferentially closed so as to define an interior, a first axial end, and an annular plate which extends radially inward from the first axial end. The second hollow body includes a radially outer annular plate which is sealingly fastened in an encircling manner axially to the annular plate of the first hollow body, and a radially inner region in which an outer surface extends in a direction of the actuation element in the interior of the first hollow body.