A convertible includes an automobile body and a movable roof having at least a rear roof part and an upper roof part, wherein the rear roof part extends at least between a belt line and the upper roof part. The upper roof part is located above a passenger compartment and in front of the rear roof part. The rear roof part has a middle section that encloses a rear window and is located between lateral main posts of the automobile body when the roof is closed. The main posts and the middle section are each rotationally connected with the automobile body and with the upper roof part by joints which form a multijoint linkage whose axis of rotation lie in a common plane in at least one movement position of the roof, so that at least one additional support of the upper roof part located in front of the rear roof part is provided for supporting the upper roof part with respect to the automobile body, wherein the additional support is active in the at least one movement position of the roof.