display book's name when I share on facebook

[Kewldude]

Hi,
When I attempt to share a passage from a book on my Kindle on facebook, it doesn't show the name of the book I am sharing from. Instead, it says "shared from a personal document."

The book I was sharing from was downloaded from the Gutenberg project and I used calibre to add it to my Kindle It has all it's meta data etc, even then?

Thanks