An assembly (100) for an ostomy device (104) comprises a package (102). The package (102) comprises at least a first and a second package portion (106, 108) which are interconnected in such a way that the package (102) is in a closed state when the first and second package portions (106, 108) are in a first mutual position and such that the package (102) is in an open state when the first and second package portions (106, 108) are in a second mutual position. The assembly further comprises a release liner (110) which at least partially covers the adhesive front surface of the ostomy device (104) at least in the closed state of the package. At least a portion of the release liner (110) is attached to the package (102) or formed integrally therewith.