diff --git a/lib/oauth.php b/lib/oauth.php
index 98678d2911012e42462393216e10435849a87673..09dbe4cc75505ff1406d4dca3bcb1d6d20e4c3b1 100644
--- a/lib/oauth.php
+++ b/lib/oauth.php
@@ -37,8 +37,8 @@ class OC_OAuth {
 	 */
 	private static function init(){
 		// Include the libraries
-		require_once(OC::$SERVERROOT.'3rdparty/oauth-php/library/OAuthServer.php');
-		require_once(OC::$SERVERROOT.'3rdparty/oauth-php/library/OAuthStore.php');
+		require_once(OC::$THIRDPARTYROOT.'3rdparty/oauth-php/library/OAuthServer.php');
+		require_once(OC::$THIRDPARTYROOT.'3rdparty/oauth-php/library/OAuthStore.php');
 		// Create the server object
 		self::$server = new OAuthServer();
 		// Initialise the OAuth store