diff --git a/lib/classes/oauth2/endpoint.php b/lib/classes/oauth2/endpoint.php
index 921f9a0e8da..21451966180 100644
--- a/lib/classes/oauth2/endpoint.php
+++ b/lib/classes/oauth2/endpoint.php
@@ -49,7 +49,7 @@ class endpoint extends persistent {
                 'type' => PARAM_INT
             ),
             'name' => array(
-                'type' => PARAM_RAW,
+                'type' => PARAM_ALPHANUMEXT,
             ),
             'url' => array(
                 'type' => PARAM_URL,