diff --git a/include/text.php b/include/text.php
index 6d6284ab2..61c731167 100755
--- a/include/text.php
+++ b/include/text.php
@@ -122,6 +122,7 @@ function purify_html($s) {
 
 	$config = HTMLPurifier_Config::createDefault();
 	$config->set('Cache.DefinitionImpl', null);
+	$config->set('Attr.EnableID', true);
 
 	$purifier = new HTMLPurifier($config);
 	return $purifier->purify($s);