How can I limit the file size of files searched by ag?

I don't want [ag](https://github.com/ggreer/the_silver_searcher) to search files larger than 2Mio. I can't find anything like a --file-size flag to the ag command, but is there any way to tell it that? I'm getting lots of

ERR: Skipping foo.bar: pcre_exec() can't handle files larger than 2147483647 bytes.