An ostomy wafer (1) comprising a proximal surface in an axial direction facing the user during use provided with an 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).
