# This patch file was generated by NetBeans IDE
# This patch can be applied using context Tools: Apply Diff Patch action on respective folder.
# It uses platform neutral UTF-8 encoding.
# Above lines and this line are ignored by the patching process.
Index: modules/book/book.pages.inc
--- modules/book/book.pages.inc Base (1.27)
+++ modules/book/book.pages.inc Locally Modified (Based On 1.27)
@@ -77,9 +77,11 @@
     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->title, 'contents' => $contents, 'depth' => $node->book['depth']));
     }
-
-    return theme('book_export_html', array('title' => $node->title, 'contents' => $contents, 'depth' => $node->book['depth']));
+    else {
+      drupal_not_found();
+    }
   }
   else {
     drupal_access_denied();
Index: modules/book/book.test
--- modules/book/book.test Base (1.27)
+++ modules/book/book.test Locally Modified (Based On 1.27)
@@ -229,11 +229,15 @@
       $this->assertText($node->title, t('Node title found in printer friendly version.'));
       $this->assertRaw(check_markup($node->body[LANGUAGE_NONE][0]['value'], $node->body[LANGUAGE_NONE][0]['format']), t('Node body found in printer friendly version.'));
     }
-    
+
     // Make sure we can't export an unsupported format.
     $this->drupalGet('book/export/foobar/' . $this->book->nid);
-    $this->assertResponse('404', t('Unsupported export format returned "not found".'));    
-    
+    $this->assertResponse('404', t('Unsupported export format returned "not found".'));
+
+    // Make sure we get a 404 on a not existing book node.
+    $this->drupalGet('book/export/html/123');
+    $this->assertResponse('404', t('Not existing book node returned "not found".'));
+
     // Make sure an anonymous user cannot view printer-friendly version.
     $this->drupalLogout();