An agricultural harvester includes a chassis, a threshing system carried by the chassis, and a cleaning system carried by the chassis and positioned below the threshing system. The cleaning system includes one or more sieves, a clean grain auger positioned below at least one sieve, and a cover plate positioned above the clean grain auger. The cover plate has a front edge and a rear edge which each extend generally parallel to a lateral axis of the clean grain auger. The front edge and rear edge are each open to allow clean grain to pass therebelow to the clean grain auger.
