Potato digger, wherein the potato digger comprises an active cleaning unit (35) in between a sieving belt (7) and a further transport installation (37), transporting and actively cleaning the potatoes from the sieving belt (7) to the further transport installation (37), the active cleaning unit (35) being positioned substantially under the haulm-removing belt (13) for receiving at least part of the potatoes falling through the haulm-removing belt (13).