2 files changed, 2 insertions, 2 deletions
diff --git a/modules/book/book.admin.inc b/modules/book/book.admin.inc
index be8fe7b4a..088c2d68a 100644
--- a/modules/book/book.admin.inc
+++ b/modules/book/book.admin.inc
@@ -70,7 +70,7 @@ function book_admin_settings_validate($form, &$form_state) {
  * @ingroup forms.
  */
 function book_admin_edit($form_state, $node) {
-  drupal_set_title($node->title);
+  drupal_set_title(check_plain($node->title));
   $form = array();
   $form['#node'] = $node;
   _book_admin_table($node, $form);
diff --git a/modules/book/book.pages.inc b/modules/book/book.pages.inc
index 01dfe3881..6ec9ce00c 100644
--- a/modules/book/book.pages.inc
+++ b/modules/book/book.pages.inc
@@ -90,7 +90,7 @@ function book_export_html($nid) {
  * Menu callback; show the outline form for a single node.
  */
 function book_outline($node) {
-  drupal_set_title($node->title);
+  drupal_set_title(check_plain($node->title));
   return drupal_get_form('book_outline_form', $node);
 }