Signature character count incorrect?

[cokey]

I am trying to add another line to my signature which will take my signature's character count up to 253 characters but when I try to submit it I get told it is too long. Is the limit still 255 characters like it says?

The signature is

[desultory]

Operating on the theory of better late than never (I was sure that I had replied to this not long after it was posted but when spam was posted in reply no reply from me was evident), that signature comes to 253 characters in itself, escaping the quotes takes it over.