diff --git a/roles/mail_server/molecule/default/group_vars/parameters-optional.yml b/roles/mail_server/molecule/default/group_vars/parameters-optional.yml
index b8cd407acf19330f09793f7fd28dfa6433b63849..ae316e74ad990e756e4b91acb0457b840cd7f0aa 100644
--- a/roles/mail_server/molecule/default/group_vars/parameters-optional.yml
+++ b/roles/mail_server/molecule/default/group_vars/parameters-optional.yml
@@ -2,7 +2,7 @@
 
 mail_ldap_base_dn: dc=local
 mail_ldap_url: ldap://ldap-server/
-mail_ldap_tls_truststore: "{{ lookup('file', 'tests/data/x509/ca.cert.pem') }}"
+mail_ldap_tls_truststore: "{{ lookup('file', 'tests/data/x509/truststore.pem') }}"
 mail_ldap_postfix_password: postfixpassword
 mail_ldap_dovecot_password: dovecotpassword
 mail_server_tls_protocols: