diff --git a/core/modules/book/src/Controller/BookController.php b/core/modules/book/src/Controller/BookController.php
index 1c23b50..dd467b9 100644
--- a/core/modules/book/src/Controller/BookController.php
+++ b/core/modules/book/src/Controller/BookController.php
@@ -9,7 +9,7 @@
 
 use Drupal\book\BookExport;
 use Drupal\book\BookManagerInterface;
-use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Controller\ControllerBase;
 use Drupal\node\NodeInterface;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\DependencyInjection\ContainerInterface;
@@ -19,7 +19,7 @@
 /**
  * Controller routines for book routes.
  */
-class BookController implements ContainerInjectionInterface {
+class BookController extends ControllerBase {
 
   /**
    * The book manager.