diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index c316278..2f34dcf 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -168,14 +168,6 @@ function book_menu() {
     'type' => MENU_SUGGESTED_ITEM,
     'file' => 'book.pages.inc',
   );
-  $items['book/export/%/%node'] = array(
-    'page callback' => 'book_export',
-    'page arguments' => array(2, 3),
-    'access callback' => 'book_export_access',
-    'access arguments' => array(3),
-    'type' => MENU_CALLBACK,
-    'file' => 'book.pages.inc',
-  );
   $items['node/%node/outline'] = array(
     'title' => 'Outline',
     'page callback' => 'book_outline',
@@ -1373,3 +1365,39 @@ function book_library_info() {
 
   return $libraries;
 }
+
+/**
+ * Generates HTML for export when invoked by Drupal\book\Controller\BookController::export().
+ *
+ * The given node is embedded to its absolute depth in a top level section. For
+ * example, a child node with depth 2 in the hierarchy is contained in
+ * (otherwise empty) <div> elements corresponding to depth 0 and depth 1.
+ * This is intended to support WYSIWYG output - e.g., level 3 sections always
+ * look like level 3 sections, no matter their depth relative to the node
+ * selected to be exported as printer-friendly HTML.
+ *
+ * @param \Drupal\node\Plugin\Core\Entity\Node
+ *   The node to export.
+ *
+ * @return
+ *   A string containing HTML representing the node and its children in
+ *   the book hierarchy.
+ *
+ * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
+ * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
+ */
+function book_export_html(Node $node) {
+  if (user_access('access printer-friendly version')) {
+    if (isset($node->book)) {
+      $tree = book_menu_subtree_data($node->book);
+      $contents = book_export_traverse($tree, 'book_node_export');
+      return theme('book_export_html', array('title' => $node->label(), 'contents' => $contents, 'depth' => $node->book['depth']));
+    }
+    else {
+      throw new NotFoundHttpException();
+    }
+  }
+  else {
+    throw new AccessDeniedHttpException();
+  }
+}
diff --git a/core/modules/book/book.pages.inc b/core/modules/book/book.pages.inc
index a971aa6..2e8ed29 100644
--- a/core/modules/book/book.pages.inc
+++ b/core/modules/book/book.pages.inc
@@ -65,42 +65,6 @@ function book_export($type, Node $node) {
 }
 
 /**
- * Generates HTML for export when invoked by book_export().
- *
- * The given node is embedded to its absolute depth in a top level section. For
- * example, a child node with depth 2 in the hierarchy is contained in
- * (otherwise empty) <div> elements corresponding to depth 0 and depth 1.
- * This is intended to support WYSIWYG output - e.g., level 3 sections always
- * look like level 3 sections, no matter their depth relative to the node
- * selected to be exported as printer-friendly HTML.
- *
- * @param \Drupal\node\Plugin\Core\Entity\Node
- *   The node to export.
- *
- * @return
- *   A string containing HTML representing the node and its children in
- *   the book hierarchy.
- *
- * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
- * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
- */
-function book_export_html(Node $node) {
-  if (user_access('access printer-friendly version')) {
-    if (isset($node->book)) {
-      $tree = book_menu_subtree_data($node->book);
-      $contents = book_export_traverse($tree, 'book_node_export');
-      return theme('book_export_html', array('title' => $node->label(), 'contents' => $contents, 'depth' => $node->book['depth']));
-    }
-    else {
-      throw new NotFoundHttpException();
-    }
-  }
-  else {
-    throw new AccessDeniedHttpException();
-  }
-}
-
-/**
  * Page callback: Shows the outline form for a single node.
  *
  * @param Drupal\node\Node $node