diff --git a/app/templates/login.hbs b/app/templates/login.hbs
index ddb1281..596340e 100644
--- a/app/templates/login.hbs
+++ b/app/templates/login.hbs
@@ -10,6 +10,7 @@
           @required={{true}}
           @onChange={{set this 'url'}}
           @placeholder='https://example.com'
+          @helper="Don't forget about CORS restrictions"
         />
 
         <Form::Input