Abstract: Disclosed is a device which, when installed in cooperation with the wall of a shower stall and the front upper edge of a bathtub, prevents water from exiting the gap between a shower curtain and the wall during use of the shower. The device comprises an elongate, generally U-shaped device, one leg of the U-shape or first side wall for sealing engagement with the wall of the stall and the other leg or second wall directed or angled toward the tub. The upper portion of the device on the side wall is cut away to facilitate movement of the shower curtain and rings past the side wall.