A clip for a draper of a crop header is arranged to cover a portion of a cleat of a draper where the lower run of the draper comes into contact with a lower support track which confines the lower run to a location clear of the cutter bar and a forwardly extending beam of the crop header frame. The clip forms a channel which features teeth presented at an inside of the channel for biting into the cleat so as to retain the clip thereon with the teeth forming ramped surfaces which can slide along the cleat upon installation of the clip, for example by press fitting the clip downwardly onto the cleat.