How to turn on HTML in forum signature?

[meowguy_imp]

Does anyone know how to turn on HTML in your forum signature? I am trying to create a link to my fuelly.com page and all that shows up is a hyper link instead the actual html code. As you can see the code works perfectly in the text section of a message (box below), but not in the signature portion of the message below the black line. Setup in UserCP says HTML is OFF.

[url=http://www.fuelly.com/driver/meowguy/cb1100]