A fixing device for a shank chisel, having a base part and an upper part, wherein the upper part is detachably connected to the base part. The upper part has an opening for receiving a shank chisel and the base part has a shaft opening, into which a shaft of the upper part is inserted, and the shaft has a tensioning surface that rests against the counter surface of a clamping element. The clamping element has a tensioning screw which is used to clamp the tensioning surface against the counter surface. The base part has a shoulder surface, which is located in the vicinity of or near the shank opening and at least partially surrounds the shank opening. A stop surface adjoins the rear region of the shoulder surface in the infeed direction at an angle. The upper part rests on the stop surface by a supporting surface and is held at a distance, at least in sections, from the base part.