WordPress: remove category posts from RSS feed

Want to say thanks to jangro.com for having a WordPress function to block a specific WordPress category from appearing in my RSS feed. I just added this to my theme’s function.php file and changed the category number to the number of the category to omit and voila, the RSS feed is now free of the other category.

function myFilter($query) {
if ($query->is_feed) {
$query->set('cat','-5');
}
return $query;
}
add_filter('pre_get_posts','myFilter');