An arrangement for the air distribution of an air conditioning system (1) of a motor vehicle. The air conditioning system (1) is configured with a housing (2) with at least two flow paths (6, 7), which empty into a mixing chamber (8), and at least one air outlet (3a, 3b, 3c) as well as an air flap (10, 11, 12) which can open and close the at least one air outlet (3a, 3b, 3c). The arrangement has a device (18) for air mixing with at least one air resistance element (21), which is supported so that it can turn about an axis of rotation (20) and which extends in the direction of the axis of rotation (20). The air resistance element (21) is configured with at least one flow through opening, so that depending on the position of the device (18) a cross section of at least one flow path (6, 7) of the housing (2) can be changed.