diff --git a/src/Control/Director.php b/src/Control/Director.php
index 8c3a0f8f2..1303118bd 100644
--- a/src/Control/Director.php
+++ b/src/Control/Director.php
@@ -472,6 +472,7 @@ class Director implements TemplateGlobalProvider
             // Default to respecting site base_url
             $parent = self::absoluteBaseURL();
         }
+        static::singleton()->extend('updateAbsoluteURLParent', $parent);
 
         // Map empty urls to relative slash and join to base
         if (empty($url) || $url === '.' || $url === './') {