diff --git a/lib/purifier/HTMLPurifier/AttrTransform/NameSync.php b/lib/purifier/HTMLPurifier/AttrTransform/NameSync.php
index 36079b786f..2094c276f4 100644
--- a/lib/purifier/HTMLPurifier/AttrTransform/NameSync.php
+++ b/lib/purifier/HTMLPurifier/AttrTransform/NameSync.php
@@ -7,6 +7,7 @@
  */
 class HTMLPurifier_AttrTransform_NameSync extends HTMLPurifier_AttrTransform
 {
+    public $idDef;
 
     public function __construct()
     {
diff --git a/lib/purifier/HTMLPurifier/ChildDef/List.php b/lib/purifier/HTMLPurifier/ChildDef/List.php
index 4fc70e0efa..d09c653ca2 100644
--- a/lib/purifier/HTMLPurifier/ChildDef/List.php
+++ b/lib/purifier/HTMLPurifier/ChildDef/List.php
@@ -15,6 +15,12 @@ class HTMLPurifier_ChildDef_List extends HTMLPurifier_ChildDef
      * @type string
      */
     public $type = 'list';
+
+    /**
+     * @type bool
+     */
+    public $whitespace;
+
     /**
      * @type array
      */