A dispensing canister-add-on-component assembly, comprising a dispensing canister (10) comprising a substantially cylindrical container (1) having a closed end (2) and an open end (3), said open end of the container being equipped by means of a ferrule with a dispensing means (4) a substantially cylindrical add-on component (60) said component being positioned adjacent to the closed end of the container to form a generally cylindrical canister-component sub-assembly having an interface between the canister and the add-on component wherein the base (62) of the add-on component is profiled to mate with the closed end of the container and wherein said add-on component is a dose counter and an adhesive-backed film (40) said film being mounted circumferentially about the canister-component sub-assembly and adhered to an external surface of the container and an external surface of the add-on component, such that the film extends across the canister-component interface (70) with its upper edge located about the add-on component and its lower edge about the container in the vicinity of the upper edge of the ferrule.