diff --git a/library/HTMLPurifier/AttrTypes.php b/library/HTMLPurifier/AttrTypes.php
index df0c179c..091ae2c9 100644
--- a/library/HTMLPurifier/AttrTypes.php
+++ b/library/HTMLPurifier/AttrTypes.php
@@ -1,10 +1,12 @@
 <?php
 
+require_once 'HTMLPurifier/AttrDef/Lang.php';
 require_once 'HTMLPurifier/AttrDef/HTML/ID.php';
 require_once 'HTMLPurifier/AttrDef/HTML/Length.php';
 require_once 'HTMLPurifier/AttrDef/HTML/MultiLength.php';
 require_once 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
 require_once 'HTMLPurifier/AttrDef/HTML/Pixels.php';
+require_once 'HTMLPurifier/AttrDef/HTML/Color.php';
 require_once 'HTMLPurifier/AttrDef/Integer.php';
 require_once 'HTMLPurifier/AttrDef/Text.php';
 require_once 'HTMLPurifier/AttrDef/URI.php';
diff --git a/tests/HTMLPurifier/AttrTypesTest.php b/tests/HTMLPurifier/AttrTypesTest.php
index 8501d9e2..1acb6bfc 100644
--- a/tests/HTMLPurifier/AttrTypesTest.php
+++ b/tests/HTMLPurifier/AttrTypesTest.php
@@ -16,6 +16,11 @@ class HTMLPurifier_AttrTypesTest extends UnitTestCase
         $this->expectError('Cannot retrieve undefined attribute type foobar');
         $types->get('foobar');
         
+        //$this->assertIdentical(
+        //    $types->get('Enum#foo,bar'),
+        //    new HTMLPurifier_AttrDef_Enum(array('foo', 'bar'))
+        //);
+        
     }
     
 }