diff --git a/include/class.format.php b/include/class.format.php
index d25579051f6c8b2f376ce35688bb382c925466b9..864bc6456c6e36863339f612e7e7fa9f2c91c581 100644
--- a/include/class.format.php
+++ b/include/class.format.php
@@ -305,8 +305,9 @@ class Format {
                   ':<!\[[^]<]+\]>:',            # <![if !mso]> and friends
                   ':<!DOCTYPE[^>]+>:',          # <!DOCTYPE ... >
                   ':<\?[^>]+>:',                # <?xml version="1.0" ... >
+                  ':<html[^>]+:i',              # drop html attributes
             ),
-            array('', '', '', ''),
+            array('', '', '', '', '<html'),
             $html);
 
         // HtmLawed specific config only