diff --git a/defaults/main.yml b/defaults/main.yml
index a337675..af1dca5 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -24,3 +24,7 @@ certbot_command_arguments:
   - "--manual-public-ip-logging-ok"
   - "-n"
   - "-d {{ certbot_domains | join(',') }}"
+
+# Use a file under /etc/cron.d
+# Works onyl if certbot_user is root
+# certbot_cronfile: certbot-letsencrypt
diff --git a/tasks/install.yml b/tasks/install.yml
index 4a0290d..673f5db 100644
--- a/tasks/install.yml
+++ b/tasks/install.yml
@@ -33,7 +33,7 @@
         minute: 55
         hour: 3
         user: "{{ certbot_user }}"
-        job: "certbot {{ certbot_command_arguments | join(" ") }}"
+        job: "certbot {{ certbot_command_arguments | join(' ') }}"
         cron_file: "{{ certbot_cronfile | default(omit) }}"
   become: True
   become_user: "{{ certbot_user }}"