The invention relates to a wound dressing assembly, in particular for dressing wounds in the region of enteroatmospheric fistulas, comprising an in particular gas-tight covering device for covering the wound and/or a skin region surrounding the wound, which covering device inhibits the penetration of fluids, characterized by an opening in the covering device and a reinforcing device, which is associated with the opening and is connected to the covering device in a fluid-tight manner and counteracts deformation of the covering device in the region of the opening, wherein a vacuum can be produced in a space bounded by the covering device, by the skin or wound covered by the covering device, and by the reinforcing device.