An assembly on a cableway or a goods-conveying system for detecting incorrect positioning of a carrying cable on a mount with a channel in which the carrying cable is located. The assembly includes a device for detecting the faulty positioning of the carrying cable. A segment of the mount is movable, and the device for detecting the incorrect positioning of the carrying cable detects movement of the portion of the mount. It is thus possible for incorrect positioning of the carrying cable, which results in this segment being displaced, to be detected in good time, even before the carrying cable in this portion has been completely derailed.