diff --git a/lib/admin/Controller/subscriber.pm b/lib/admin/Controller/subscriber.pm
index a5c5287..bb65e6e 100644
--- a/lib/admin/Controller/subscriber.pm
+++ b/lib/admin/Controller/subscriber.pm
@@ -792,6 +792,7 @@ sub update_preferences : Local {
     ### alternative routing ###
 
     $$preferences{alternative_route} = $c->request->params->{alternative_route} ? 1 : undef;
+    $$preferences{is_external} = $c->request->params->{is_external} ? 1 : undef;
 
     ### save settings ###
 
diff --git a/root/tt/subscriber_preferences.tt b/root/tt/subscriber_preferences.tt
index 94962a5..1c4521f 100644
--- a/root/tt/subscriber_preferences.tt
+++ b/root/tt/subscriber_preferences.tt
@@ -66,6 +66,7 @@
                       || preference.key == "in_use"
                       || preference.key == "ignore_allowed_ips"
                       || preference.key == "alternative_route"
+                      || preference.key == "is_external"
                 %]
                 <tr>
                   <td class="tdkey">[% preference.key %]:</td>