diff --git a/roles/mail_forwarder/molecule/default/group_vars/parameters-optional.yml b/roles/mail_forwarder/molecule/default/group_vars/parameters-optional.yml
index f09e3c2d8eedd1a7693bbe3b3707c95c22094a40..e2eba851306887923fa931a163aa7e75496a7909 100644
--- a/roles/mail_forwarder/molecule/default/group_vars/parameters-optional.yml
+++ b/roles/mail_forwarder/molecule/default/group_vars/parameters-optional.yml
@@ -6,8 +6,8 @@ mail_message_size_limit: 20480001
 smtp_from_relay_allowed: true
 smtp_relay_host: mail-server
 smtp_relay_host_port: 27
-smtp_relay_truststore: "{{ lookup('file', 'tests/data/x509/ca.cert.pem') }}"
+smtp_relay_truststore: "{{ lookup('file', 'tests/data/x509/ca/level1.cert.pem') }}"
 
 # common
 ca_certificates:
-  testca: "{{ lookup('file', 'tests/data/x509/ca.cert.pem') }}"
+  testca: "{{ lookup('file', 'tests/data/x509/ca/level1.cert.pem') }}"