diff --git a/testsite/group_vars/backup.yml b/testsite/group_vars/backup.yml
index dc9d2eea12b8e6c3f1bfe482c3293d0354dbe1e6..8b4adb817c98ebf56d39045891c9f06e346f5fc7 100644
--- a/testsite/group_vars/backup.yml
+++ b/testsite/group_vars/backup.yml
@@ -5,7 +5,7 @@ local_mail_aliases:
 
 smtp_relay_host: mail.{{ testsite_domain }}
 
-smtp_relay_truststore:  "{{ lookup('file', inventory_dir + '/tls/ca.pem') }}"
+smtp_relay_truststore: "{{ lookup('file', inventory_dir + '/tls/ca.pem') }}"
 
 backup_clients:
   - server: web.{{ testsite_domain }}