When one of the workers paints the door frame on the outside of the building and clears away the electrical wire, part of the lintel is already painted white. Later, when Banaszak climbs up the ladder, the lintel has not yet been painted. Then, in the close-up in which he gets the electric shock, a good part of the lintel is painted white again, and in the next shot, when he falls off the ladder, only a tiny part is painted white again.