How to disable XSS blocker notification in IE?

Using Internet Explorer 9 I sometimes get a notification that "Internet Explorer has modified this page to prevent cross-site scripting." So far this has not given me any problems with browsing, in fact it simply removed a few ads, but one one site it pops up almost every page and I want to stop receiving notifications about it, if possible. I do trust the site enough to remove XSS blocker for just that site if there's no other way to remove the notification.