As I was passing through international boarding/controls at JFK not long ago, a woman next to me had the same "oh come on, it's the same thing, it's just a typo" and the agent told her they had been clearly instructed that "close enough" wasn't close enough.

If it were domestic, I wouldn't worry too much. International - I'd push back to the ticketing agency and get it right.

Either way, let us know what happens - this questions comes up periodically.