diff --git a/docs/add-roundcube.rst b/docs/add-roundcube.rst
index 6b10d5b..06c7b2f 100644
--- a/docs/add-roundcube.rst
+++ b/docs/add-roundcube.rst
@@ -18,9 +18,8 @@ servers may require more work.
         # the mailserver
         hostName = "webmail.example.com";
         extraConfig = ''
-          # starttls needed for authentication, so the fqdn required to match
-          # the certificate
-          $config['smtp_host'] = "tls://${config.mailserver.fqdn}";
+          $config['imap_host'] = "ssl://${config.mailserver.fqdn}";
+          $config['smtp_host'] = "ssl://${config.mailserver.fqdn}";
           $config['smtp_user'] = "%u";
           $config['smtp_pass'] = "%p";
         '';