Stop Pathauto from changing punctuation to html code

Hi All,

Working with taxonomy paths and having some issues.

this is the pattern I have asked it to follow-

/library?keys=[term:name]&type=1

this is what it is spitting out-

/library%3Fkeys%3Dworkout%26type%3D1

it should look like this-

/library?keys=workout&type=1

any ideas?? i have gone to the settings page and told it not to replace those particular characters

Thanks,
Ben