diff --git a/modules/openid/openid.module b/modules/openid/openid.module
index 71e0f5b..a2e1155 100644
--- a/modules/openid/openid.module
+++ b/modules/openid/openid.module
@@ -512,10 +512,10 @@ function openid_authentication_request($claimed_id, $identity, $return_to = '',
   );
 
   if ($version == 2) {
-    $request['openid.realm'] = url('', array('absolute' => TRUE));
+    $request['openid.realm'] = $base_url . '/';
   }
   else {
-    $request['openid.trust_root'] = url('', array('absolute' => TRUE));
+    $request['openid.trust_root'] = $base_url . '/';
   }
 
   // Simple Registration