diff --git a/src/components/views/login/VectorCustomServerDialog.js b/src/components/views/login/VectorCustomServerDialog.js
index 80cd6800..8395f139 100644
--- a/src/components/views/login/VectorCustomServerDialog.js
+++ b/src/components/views/login/VectorCustomServerDialog.js
@@ -1,5 +1,6 @@
/*
Copyright 2015, 2016 OpenMarket Ltd
+Copyright 2017 New Vector Ltd
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -31,7 +32,13 @@ module.exports = React.createClass({
{ _t('Custom Server Options') }
-
+ This allows "+
+ "you to use Riot with an existing Matrix account on a different home "+
+ "server.
You can also set a custom identity server but you won't "+
+ "be able to invite users by email address, or be invited by email address yourself.",
+ ))}} />