Originally Posted by
GUWonder
As in many things in life, YMMV, even as it is probably likely to be fine.
Airport security noting the OP's single-letter transposition? Low, but possible. Airport security making a fuss over the same? Low, but possible. Airline making a fuss over the same? Low, but possible.
Personally, I wouldn't worry about it and wouldn't do anything beyond call the airline, if even that.
Agree fully it is a very low chance it will even be noticed, but I would hate to be in that position if I could have clarified/changed it easily in advance.
I had to look at the first post a few times to confirm there was no difference, thought I was missing something at first. It is quite hard to spot a single transposition.