Disable URL Guessing in WordPress

Placing the following PHP code snippet below in your theme’s funtions.php file will disable a WordPress feature that attempts to automatically redirect a bad url to an actual post or page with a similar url.

Please note, if there are any broken links to your website or it’s pages that benefit from this feature it will now lead to a standard 404 error page.

/* Disable URL guessing - */
add_filter('redirect_canonical', 'pz_no_redirect_404');

function pz_no_redirect_404($redirect_url)
    if (is_404()) {
        return false;
    return $redirect_url;

The above was found in a post at

By Joseph Dickson

Joseph Dickson is a web developer in higher education and an avid proponent of using WordPress’ core features to create flexible and manageable design solutions.

2 replies on “Disable URL Guessing in WordPress”

Hi Joseph,

Thank you for coming up this piece of code, but unfortunately it didn’t seem to work for me.

WP 5.7.2

Thank you

Leave a Reply

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.