diff --git a/library/HTMLPurifier/HTMLModule/Legacy.php b/library/HTMLPurifier/HTMLModule/Legacy.php
index 86b52995..5f72206a 100644
--- a/library/HTMLPurifier/HTMLModule/Legacy.php
+++ b/library/HTMLPurifier/HTMLModule/Legacy.php
@@ -131,7 +131,6 @@ public function setup($config)
 
         $ol = $this->addBlankElement('ol');
         $ol->attr['compact'] = 'Bool#compact';
-        $ol->attr['start'] = new HTMLPurifier_AttrDef_Integer();
         $ol->attr['type'] = 'Enum#s:1,i,I,a,A';
 
         $p = $this->addBlankElement('p');
diff --git a/library/HTMLPurifier/HTMLModule/List.php b/library/HTMLPurifier/HTMLModule/List.php
index 7a20ff70..2968e05f 100644
--- a/library/HTMLPurifier/HTMLModule/List.php
+++ b/library/HTMLPurifier/HTMLModule/List.php
@@ -30,6 +30,8 @@ class HTMLPurifier_HTMLModule_List extends HTMLPurifier_HTMLModule
     public function setup($config)
     {
         $ol = $this->addElement('ol', 'List', new HTMLPurifier_ChildDef_List(), 'Common');
+        $ol->attr['reversed'] = 'Bool#reversed';
+        $ol->attr['start'] = new HTMLPurifier_AttrDef_Integer();
         $ul = $this->addElement('ul', 'List', new HTMLPurifier_ChildDef_List(), 'Common');
         // XXX The wrap attribute is handled by MakeWellFormed.  This is all
         // quite unsatisfactory, because we generated this