--- a/ttml2/spec/ttml2.xml	Thu May 07 08:25:58 2015 -0600
+++ b/ttml2/spec/ttml2.xml	Thu May 07 08:29:26 2015 -0600
@@ -16448,7 +16448,6 @@
   | translator
   | translatorContact
   | usesForced
-  | usesStereo
 </eg>
 </td>
 </tr>