A motor casing and a combination of a motor casing and a plug connection, the motor casing being designed for a drive of movable components of a vehicle, in particular sunroofs, blinds or roofs of convertible. A plug is inserted in the motor casing and a gap is provided between the motor casing and the plug connection. According to the disclosure, at least one projection is provided in the area of the gap and avoids play between the motor casing and the plug connection.