diff --git a/roles/mail_forwarder/defaults/main.yml b/roles/mail_forwarder/defaults/main.yml
index 9aff8c79653f0a08fcfe6f90e58a3df916df6f63..e7dcda4ed297d54c66f03a91194cc5814bfdbc15 100644
--- a/roles/mail_forwarder/defaults/main.yml
+++ b/roles/mail_forwarder/defaults/main.yml
@@ -1,7 +1,7 @@
 ---
 
 local_mail_aliases: {}
-smtp_from_relay_allowed: True
+smtp_from_relay_allowed: true
 smtp_relay_host: ""
 smtp_relay_truststore: "{{ lookup('file', tls_certificate_dir + '/truststore.pem') }}"
 smtp_relay_host_port: null