diff --git a/core/lib/Drupal/Core/Site/Settings.php b/core/lib/Drupal/Core/Site/Settings.php
index c757d1e..2b82e31 100644
--- a/core/lib/Drupal/Core/Site/Settings.php
+++ b/core/lib/Drupal/Core/Site/Settings.php
@@ -112,7 +112,7 @@ public static function getAll() {
    */
   public static function initialize($app_root, $site_path, &$class_loader) {
     // Export these settings.php variables to the global namespace.
-    global $base_url, $config_directories, $config;
+    global $config_directories, $config;
     $settings = array();
     $config = array();
     $databases = array();