diff --git a/core/lib/Drupal/Core/Authentication/Provider/Cookie.php b/core/lib/Drupal/Core/Authentication/Provider/Cookie.php
index ae108dc..dee78ff 100644
--- a/core/lib/Drupal/Core/Authentication/Provider/Cookie.php
+++ b/core/lib/Drupal/Core/Authentication/Provider/Cookie.php
@@ -30,12 +30,10 @@ public function applies(Request $request) {
    * {@inheritdoc}
    */
   public function authenticate(Request $request) {
-    // Global $user is deprecated, but the session system is still based on it.
-    global $user;
     require_once DRUPAL_ROOT . '/' . settings()->get('session_inc', 'core/includes/session.inc');
     drupal_session_initialize();
     if (drupal_session_started()) {
-      return $user;
+      return \Drupal::currentUser();
     }
     return NULL;
   }