diff --git a/code/SecurityAdmin.php b/code/SecurityAdmin.php
index c4b80ef0..f1bc3b2b 100644
--- a/code/SecurityAdmin.php
+++ b/code/SecurityAdmin.php
@@ -5,8 +5,10 @@
  * @subpackage security
  */
 class SecurityAdmin extends LeftAndMain implements PermissionProvider {
-	static $tree_class = "Group";
-	static $subitem_class = "Member";
+
+	static $tree_class = 'Group';
+	
+	static $subitem_class = 'Member';
 	
 	static $allowed_actions = array(
 		'addgroup',