diff --git a/core/modules/node/lib/Drupal/node/Tests/NodePageCacheTest.php b/core/modules/node/lib/Drupal/node/Tests/NodePageCacheTest.php
index 96f2c1c..4a2385c 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodePageCacheTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodePageCacheTest.php
@@ -32,7 +32,7 @@ public static function getInfo() {
   function setUp() {
     parent::setUp();
 
-    \Drupal::config('system.performance')
+    $this->container->get('config.factory')->get('system.performance')
       ->set('cache.page.use_internal', 1)
       ->set('cache.page.max_age', 300)
       ->save();
@@ -47,7 +47,7 @@ function setUp() {
   /**
    * Tests deleting nodes clears page cache.
    */
-  function testNodeDelete() {
+  public function testNodeDelete() {
     $node_path = 'node/' . $this->drupalCreateNode()->id();
 
     // Populate page cache.