A Small Annoyance

This shouldn't annoy me but it does!

For my birthday I was given a gift card to a local used book store.   YAY BOOKS!

I didn't have anything particular in mind so I just browsed and I came across an author's name "Coey Doctorow" and I knew I had read a book (or two?) by him before (he's a prolific writer I can't remember what I read) and liked it enough so I picked this one up and am currently reading it.

It's a standard fiction novel and when I was putting it away the other night I looked at the price tag on the back and this book store had it labelled as "science fiction" which is probably the section I picked it out of.  He is *known* as a science fiction author but this book is not.   

I mean unless there's some bizarre twist coming (but I don't think so seeing as I'm mid way through the book and have a sense of where it's going to go) they have mis labelled this book and I am kind of irrationally irritated by that?

I mean is there a point in me letting them know "you put this book in the wrong genre" when I've already bought it and am enjoying it?  Not really.  Do I plan on selling the book once I'm done?  Probably not.  But I might take the WRONG LABEL off of it before I give it away or whatever, but yeah, I'm annoyed at the mislabel,  but can also understand why I think it happened. (When you google him "science fiction author" comes up so....)