diff --git a/core/modules/book/book.services.yml b/core/modules/book/book.services.yml
new file mode 100644
index 0000000..cca83b3
--- /dev/null
+++ b/core/modules/book/book.services.yml
@@ -0,0 +1,5 @@
+services:
+  access_check.book.outline:
+    class: Drupal\book\Access\OutlineAccessCheck
+    tags:
+      - { name: access_check }
\ No newline at end of file
diff --git a/core/modules/book/lib/Drupal/book/BookBundle.php b/core/modules/book/lib/Drupal/book/BookBundle.php
deleted file mode 100644
index 0c4fe11..0000000
--- a/core/modules/book/lib/Drupal/book/BookBundle.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains Drupal\book\BookBundle.
- */
-
-namespace Drupal\book;
-
-use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\HttpKernel\Bundle\Bundle;
-
-/**
- * Book dependency injection container.
- */
-class BookBundle extends Bundle {
-
-  /**
-   * Overrides Symfony\Component\HttpKernel\Bundle\Bundle::build().
-   */
-  public function build(ContainerBuilder $container) {
-    $container->register('access_check.book.outline', 'Drupal\book\Access\OutlineAccessCheck')
-      ->addTag('access_check');
-  }
-}