Ampersand in category showing up as &

Pretty much just as the title says – I have a category called “Film & TV”, when tweeted via WP to Twitter it shows up as “Film & amp ; TV” (since the code isn’t working, I spaced it out for an example) instead of just the basic ampersand. I see that there’s an option to strip non-alphanumeric characters, but that doesn’t seem to make a difference after testing it, still showing up as the HTML code for &.

Any chance this is an easy fix?

http://wordpress.org/extend/plugins/wp-to-twitter/