changing my cat's name?

changing my cat's name?

up until recently, my kitten (that i've had for about two months) has gone without a name. until i could find the perfect name for my cat, we resigned to calling him "kitty" until then. now i've finally found a name for him and i was wondering, would it affect the cat if we all of a sudden just started calling him something else? would he have some sort of long-term confusion? any input is greatly appreciated.