A discharge chute for the unloading auger of a combine is provided with a discharge opening which provides maximum discharge flow rate and maximum clearance for moving and positioning of the auger. The discharge chute has an upper surface extending downwardly at a first angle relative to a horizontal plane, and a lower surface extending downwardly in a second angle relative to a horizontal plane. The first angle of the upper surface is greater than the second angle of the lower surface. The discharge chute also includes an internally mounted dribble door pivotal between raised and lowered positions. The door prevents grain dribble when in the upper position, and allows unobstructed grain discharge when in the lowered position.