diff --git a/core/lib/Drupal/Core/Authentication/AuthenticationManager.php b/core/lib/Drupal/Core/Authentication/AuthenticationManager.php
index fda38e2..bb80c44 100644
--- a/core/lib/Drupal/Core/Authentication/AuthenticationManager.php
+++ b/core/lib/Drupal/Core/Authentication/AuthenticationManager.php
@@ -67,7 +67,7 @@ class AuthenticationManager implements AuthenticationProviderInterface, Authenti
   /**
    * {@inheritdoc}
    */
-  public function addProvider(AuthenticationProviderInterface $provider, $id, $priority = 0, $is_global = FALSE) {
+  public function addProvider(AuthenticationProviderInterface $provider, $id, $priority = 0, $global = FALSE) {
     // Remove the 'authentication.' prefix from the provider ID.
     $id = substr($id, 15);
 
@@ -83,7 +83,7 @@ public function addProvider(AuthenticationProviderInterface $provider, $id, $pri
       $this->challengers[$id] = $provider;
     }
 
-    if ($is_global) {
+    if ($global) {
       $this->globalProviders[$id] = TRUE;
     }
   }
diff --git a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
index 7ec92a2..a8e402d 100644
--- a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
@@ -27,10 +27,10 @@ class AuthenticationManagerTest extends UnitTestCase {
    *
    * @dataProvider providerTestDefaultFilter
    */
-  public function testDefaultFilter($applies, $has_route, $auth_option, $provider_id, $is_global) {
+  public function testDefaultFilter($applies, $has_route, $auth_option, $provider_id, $global) {
     $authentication_manager = new AuthenticationManager();
     $auth_provider = $this->getMock('Drupal\Core\Authentication\AuthenticationProviderInterface');
-    $authentication_manager->addProvider($auth_provider, 'authentication.' . $provider_id, 0, $is_global);
+    $authentication_manager->addProvider($auth_provider, 'authentication.' . $provider_id, 0, $global);
 
     $request = new Request();
     if ($has_route) {