diff --git a/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php b/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
index 221a44a..812e437 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
@@ -25,7 +25,7 @@ class ContentNegotiationRoutingTest extends KernelTestBase {
   public function register(ContainerBuilder $container) {
     parent::register($container);
 
-    // \Drupal\simpletest\KernelTestBase::containerBuild() removes the alias path
+    // \Drupal\KernelTests\KernelTestBase::register() removes the alias path
     // processor.
     if ($container->hasDefinition('path_processor_alias')) {
       $definition = $container->getDefinition('path_processor_alias');