A device for fastening a component to a carrier component includes a housing part and a clip part received by the housing part. The clip part is received in the housing part so as to be rotatable between a locking position and an unlocking position. The housing part, with the clip part in the locking position has a pre-mounting position in which first latching means of the housing part latch against the opening in the component. The housing part, with the clip part in the locking position has a final-mounting position in which second latching means of the clip part latch against the opening in the carrier component. The device with clip part in the locking position cannot be released from the carrier component in a linear demounting direction, but can be when the clip part is rotated to the unlocking position.