diff --git a/defaults/main.yml b/defaults/main.yml
index 9ac2823..40211c8 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -13,6 +13,7 @@ certbot_hsts: false
 # Parameters used when creating new Certbot certs.
 certbot_create_if_missing: false
 certbot_create_method: standalone
+certbot_create_extra_args: ""
 certbot_admin_email: email@example.com
 certbot_expand: false