diff -up flag/flag.module flag_fixed/flag.module
--- flag/flag.module    2009-03-14 02:13:54.000000000 -0400
+++ flag_fixed/flag.module      2009-08-18 09:23:37.404047187 -0400
@@ -702,10 +702,11 @@ function flag_form(&$form_state, $name, 
     $form['roles']['#value'] = $flag->roles;
   }
 
+  $options = array_map('check_plain', node_get_types('names'));
   $form['types'] = array(
     '#type' => 'checkboxes',
     '#title' => t('What nodes this flag may be used on'),
-    '#options' => node_get_types('names'),
+    '#options' => $options,
     '#default_value' => $flag->types,
     '#description' => t('Check any node types that this flag may be used on. You must check at least one node type.'),
     '#required' => TRUE,