--- a/devtools/htmlparser.py	Fri Apr 26 18:47:36 2013 +0200
+++ b/devtools/htmlparser.py	Mon Apr 29 11:06:28 2013 +0200
@@ -90,8 +90,7 @@
                                  '[3.17] you should use the '
                                  'XMLValidator class instead')
 
-
-class XMLDemotingValidator(SaxOnlyValidator):
+class XMLDemotingValidator(XMLValidator):
     """ some views produce html instead of xhtml, using demote_to_html
 
     this is typically related to the use of external dependencies