Saw that one, too. Fortunately, in the entire HUGE book, there's ONE typo, and one grammar edit error. Just for my own peace of mind, I've taken to going into all (my own) books with Wite-Out and a fine-point pen and correcting the errors manually. Some books (not necessarily Jim's) are FULL of them. Copy editing is a dying art, apparently.
Does your jaw twinge when you see one? Get a shiver down your back? Make you stop reading and stare for a minute, completely losing the thread of the story? Me, too.