Is there a way to have Facebook stop doing this?

I'm using the main FB site. Any time I write things like better or possible, it puts in names of friends. I don't want this. Seeing as the edit field has no verbalization whatsoever, I have to read it over before sending, which is when I find out what it's done. Can I stop this somehow? It's really annoying. Thanks. Oh, it doesn't matter what version of Mac Os you use. And I know there's the mobile site but, I just don't care to use it.