An ostomy appliance for attachment to a stoma, comprising an adhesive wafer (100) a first part of which is covered by a first release liner (104) and a second part of which is covered by a second release liner (106). At least one of the two release liners defines an attached part which in an initial state is attached to the skin facing adhesive layer (102), and a foldable part which in a folded state is folded such that it covers at least a part of the attached part and such that it is not in direct contact with the skin facing adhesive layer. A cutting guide (120) is printed onto the at least a part of the attached part and the foldable part.