diff --git a/wp-settings.php b/wp-settings.php
index 9dd4269c03..6496d0c285 100644
--- a/wp-settings.php
+++ b/wp-settings.php
@@ -193,6 +193,7 @@ require (ABSPATH . WPINC . '/version.php');
 require (ABSPATH . WPINC . '/deprecated.php');
 require (ABSPATH . WPINC . '/script-loader.php');
 require (ABSPATH . WPINC . '/taxonomy.php');
+require (ABSPATH . WPINC . '/canonical.php');
 
 if (strpos($_SERVER['PHP_SELF'], 'install.php') === false) {
     // Used to guarantee unique hash cookies