diff --git a/actions/xrds.php b/actions/xrds.php
index d5fef4e7a1..6b4c3cdf51 100644
--- a/actions/xrds.php
+++ b/actions/xrds.php
@@ -19,19 +19,8 @@
 
 if (!defined('LACONICA')) { exit(1); }
 
-define('OAUTH_NAMESPACE', 'http://oauth.net/core/1.0/');
-define('OMB_NAMESPACE', 'http://openmicroblogging.org/protocol/0.1');
-define('OAUTH_DISCOVERY', 'http://oauth.net/discovery/1.0');
+require_once(INSTALLDIR.'/lib/omb.php');
 
-define('OMB_ENDPOINT_UPDATEPROFILE', OMB_NAMESPACE.'updateProfile');
-define('OAUTH_ENDPOINT_REQUEST', OAUTH_NAMESPACE.'endpoint/request');
-define('OAUTH_ENDPOINT_AUTHORIZE', OAUTH_NAMESPACE.'endpoint/authorize');
-define('OAUTH_ENDPOINT_ACCESS', OAUTH_NAMESPACE.'endpoint/access');
-define('OAUTH_ENDPOINT_RESOURCE', OAUTH_NAMESPACE.'endpoint/resource');
-define('OAUTH_AUTH_HEADER', OAUTH_NAMESPACE.'parameters/auth-header');
-define('OAUTH_POST_BODY', OAUTH_NAMESPACE.'parameters/post-body');
-define('OAUTH_HMAC_SHA1', OAUTH_NAMESPACE.'signature/HMAC-SHA1');
-	   
 class XrdsAction extends Action {
 
 	function handle($args) {
diff --git a/lib/omb.php b/lib/omb.php
new file mode 100644
index 0000000000..0267ae5970
--- /dev/null
+++ b/lib/omb.php
@@ -0,0 +1,34 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+define('OAUTH_NAMESPACE', 'http://oauth.net/core/1.0/');
+define('OMB_NAMESPACE', 'http://openmicroblogging.org/protocol/0.1');
+define('OAUTH_DISCOVERY', 'http://oauth.net/discovery/1.0');
+
+define('OMB_ENDPOINT_UPDATEPROFILE', OMB_NAMESPACE.'updateProfile');
+define('OAUTH_ENDPOINT_REQUEST', OAUTH_NAMESPACE.'endpoint/request');
+define('OAUTH_ENDPOINT_AUTHORIZE', OAUTH_NAMESPACE.'endpoint/authorize');
+define('OAUTH_ENDPOINT_ACCESS', OAUTH_NAMESPACE.'endpoint/access');
+define('OAUTH_ENDPOINT_RESOURCE', OAUTH_NAMESPACE.'endpoint/resource');
+define('OAUTH_AUTH_HEADER', OAUTH_NAMESPACE.'parameters/auth-header');
+define('OAUTH_POST_BODY', OAUTH_NAMESPACE.'parameters/post-body');
+define('OAUTH_HMAC_SHA1', OAUTH_NAMESPACE.'signature/HMAC-SHA1');
+