diff --git a/core/modules/book/book.admin.inc b/core/modules/book/book.admin.inc
index d69c82b696d11019ac0e7db6ae75f226776f669a..5c414e09529ffecb98d9e78d12b344a83cb6176e 100644
--- a/core/modules/book/book.admin.inc
+++ b/core/modules/book/book.admin.inc
@@ -295,5 +295,5 @@ function theme_book_admin_table($variables) {
     $rows[] = $row;
   }
 
-  return theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => array('id' => 'book-outline')));
+  return theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => array('id' => 'book-outline'), 'empty' => t('No book content available.')));
 }