The invention relates to a wall formwork for the construction of walls with a formwork facing and elements which support the formwork facing, with several anchor holes which pass through supporting elements, with a sleeve made of plastic which is held in a force-fit and/or form-fit manner in an anchor hole, wherein the sleeve extends from one end of the anchor hole to the other end of the anchor hole, and wherein the outer face of the sleeve tightly abuts the inner face of the anchor hole at the side of the formwork facing, characterized in that each anchor hole comprises a sleeve. The invention further relates to a method for cleaning a wall formwork with the features according to one of the preceding claims, characterized in that concrete is driven out of an anchor hole.