clock05 on "Google XML Sitemap erroring due to Contact Form 7"

I use Contact Form 7 for everything, I just installed Google XML Sitemap, tested it, and receive this error:

XML Parsing Error: not well-formed
Location: http://url.com/sitemap.xml
Line Number 11, Column 73:
<loc>http://url.com/?post_type=wpcf7_contact_form&p=4</loc>

Any help would be great.

http://wordpress.org/extend/plugins/contact-form-7/