Operating element and assembly for an air diffuser, and method for fitting an operating element

A control element (16) for an air vent (10) in a vehicle has a bearing section which serves for bearing the control element (16) on the air vent side and has a receptacle (22), in particular for a lamella (12) of an air vent (10), as well as a spring element (34) which projects into the receptacle (22) of the bearing section, wherein the spring element (34) is formed in one piece on the control element (16).