diff --git a/core/modules/book/lib/Drupal/book/Tests/BookTest.php b/core/modules/book/lib/Drupal/book/Tests/BookTest.php
index 93c5c78..e5361bf 100644
--- a/core/modules/book/lib/Drupal/book/Tests/BookTest.php
+++ b/core/modules/book/lib/Drupal/book/Tests/BookTest.php
@@ -21,7 +21,7 @@ class BookTest extends WebTestBase {
    *
    * @var array
    */
-  public static $modules = array('book', 'block', 'node_access_test');
+  public static $modules = array('book', 'block', 'node_access_test', 'comment');
 
   /**
    * A book node.
@@ -67,8 +67,12 @@ function setUp() {
 
     // Create users.
     $this->book_author = $this->drupalCreateUser(array('create new books', 'create book content', 'edit own book content', 'add content to books'));
-    $this->web_user = $this->drupalCreateUser(array('access printer-friendly version', 'node test view'));
-    $this->admin_user = $this->drupalCreateUser(array('create new books', 'create book content', 'edit own book content', 'add content to books', 'administer blocks', 'administer permissions', 'administer book outlines', 'node test view', 'administer content types', 'administer site configuration'));
+    $this->web_user = $this->drupalCreateUser(array('access printer-friendly version', 'node test view', 'access comments', 'post comments'));
+    $this->admin_user = $this->drupalCreateUser(array('create new books', 'create book content', 'edit own book content', 'add content to books', 'administer blocks', 'administer permissions', 'administer book outlines', 'node test view', 'administer content types', 'administer site configuration', 'access comments', 'post comments'));
+
+    // Create comment field on article.
+    $this->container->get('comment.manager')->addDefaultField('node', 'book');
+
   }
 
   /**
@@ -207,7 +211,7 @@ function checkBookNode(EntityInterface $node, $nodes, $previous = FALSE, $up = F
     $this->drupalGet('book/export/html/' . $node->id());
     $this->assertText($node->label(), 'Printer friendly title found.');
     $this->assertRaw($node->body->processed, 'Printer friendly body found.');
-
+    $this->assertNoText('Add new comment', 'Add new comment not found');
     $number++;
   }