An ostomy wafer (1) comprising a proximal surface in an axial direction facing the user during use provided withan adhesive layer (7) a distal surface (5) in the axial direction facing away from the user during use provided with a backing layer coupling means for attaching a collection bag an opening having an inner radial boundary defining a stoma receiving opening and an outer radial boundary defining the peripheral edge of the ostomy wafer. Furthermore the wafer is provided with a reinforcement structure (6).
