diff --git a/roles/connect_realm/defaults/main.yml b/roles/connect_realm/defaults/main.yml
index 2ecf841..89f0f24 100644
--- a/roles/connect_realm/defaults/main.yml
+++ b/roles/connect_realm/defaults/main.yml
@@ -5,7 +5,7 @@ connect_realm_admin_password: "C0nnect-Realm-Admin!"
 
 client_web_origin_connect: "{{ http_s }}://{{ connect_base_url }}"
 client_web_origin_wordpress: "{{ http_s }}://{{ wordpress_base_url }}"
-client_web_origin_connect_external: "{{ http_s }}://{{ connect_external_subdomain }}.{{ domain }}"
+client_web_origin_connect_external: "{{ http_s }}://{{ connect_external_subdomain | default('unset') }}.{{ domain }}"
 
 current_realm_clients: [
   {