diff --git a/models/Group.php b/models/Group.php
index 3b6b67251..358f45a92 100644
--- a/models/Group.php
+++ b/models/Group.php
@@ -2,6 +2,8 @@
 // grouptable doesn't extend Doctrine_Table -> Doctrine_Connection
 // won't initialize grouptable when Doctrine_Connection->getTable('Group') is called
 
+require_once('Entity.php');
+
 class GroupTable { }
 class Group extends Entity {
     public function setUp() {