diff --git a/ding_content.features.filter.inc b/ding_content.features.filter.inc
index 4e85d65..8a593d5 100644
--- a/ding_content.features.filter.inc
+++ b/ding_content.features.filter.inc
@@ -40,7 +40,7 @@ function ding_content_filter_default_formats() {
         'weight' => 2,
         'status' => 1,
         'settings' => array(
-          'allowed_html' => '<a> <p> <em> <strong> <cite> <blockquote> <ul> <ol> <li> <dl> <dt> <dd> <table> <tr> <th> <td> <br> <img> <iframe> <h2> <h3> <h4> <h5> <h6> <div> <audio> <source>',
+          'allowed_html' => '<a> <p> <em> <strong> <cite> <blockquote> <ul> <ol> <li> <dl> <dt> <dd> <table> <tr> <th> <td> <br> <img> <iframe> <h2> <h3> <h4> <h5> <h6> <div> <audio> <source> <u>',
           'filter_html_help' => 1,
           'filter_html_nofollow' => 0,
         ),