An ostomy appliance comprising a body side member (20) for attachment to a skin surface of a user. The body side member includes a backing layer (22), an adhesive layer (24), and at least one release liner (38). The release liner is at least partly embossed (40) to form interconnected cavities (42) between the release liner and the adhesive surface. When fluid is distributed into the cavities, the adhesive surface is wetted.