Index: modules/filter/filter.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/filter/filter.module,v
retrieving revision 1.287
diff -u -p -r1.287 filter.module
--- modules/filter/filter.module	30 Aug 2009 06:04:09 -0000	1.287
+++ modules/filter/filter.module	8 Sep 2009 19:14:28 -0000
@@ -770,7 +770,7 @@ function filter_filter_info() {
     'process callback' => '_filter_html',
     'settings callback' => '_filter_html_settings',
     'default settings' => array(
-      'allowed_html' => '<a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>',
+      'allowed_html' => '<a> <h2> <h3> <h4> <h5> <h6> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>',
       'filter_html_help' => 1,
       'filter_html_nofollow' => 0,
     ),