diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index a1398bb..19fd74d 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -114,9 +114,7 @@
  *
  * This strips two levels of directories off the current directory.
  */
-if (!defined('DRUPAL_ROOT')) {
-  define('DRUPAL_ROOT', dirname(dirname(__DIR__)));
-}
+define('DRUPAL_ROOT', dirname(dirname(__DIR__)));
 
 /**
  * Returns the appropriate configuration directory.