diff --git a/defaultconfig.install b/defaultconfig.install
index b017463..78ffc7a 100644
--- a/defaultconfig.install
+++ b/defaultconfig.install
@@ -61,6 +61,6 @@ function defaultconfig_optional_table_original() {
         'default' => 0,
       ),
     ),
-    'primary key' => array('oid', 'name'),
+    'indexes' => array('name_lookup' => array('oid', 'name')),  
   );
-}
\ No newline at end of file
+}