diff --git a/tasks/setup.yml b/tasks/setup.yml
index 522d1fd..0971369 100644
--- a/tasks/setup.yml
+++ b/tasks/setup.yml
@@ -8,8 +8,8 @@
     --agree-tos
     {{ certbot_command_arguments | join(' ') }}
     -n -d {{ item.domains | join(',') }}
-  register: certbot_init
-  changed_when: certbot_init.rc == 130
+  register: __certbot_init
+  changed_when: __certbot_init.rc == 130
   ignore_errors: True
   loop: "{{ certbot_domain_groups }}"
   loop_control: