He doesnt care about cell sizes. He just wanted the error gone so he got what he asked for.
Perhaps you could explain to him why he wont need [MAX_STRING] (or) [255] ? Although he doesnt care.. lol
Simply because you are using more cells then you actually need and it's wasting RAM. If anything, 128 would be appropriate. I won't go into detail though, as I'd have to double check on that one.