diff --git a/roles/web_server/molecule/default/group_vars/parameters-optional.yml b/roles/web_server/molecule/default/group_vars/parameters-optional.yml
index 031bc97af6f11b363b52870cc6d9a846e332004a..c0dbd631bdabb4c8a25f666595477c4c49414de2 100644
--- a/roles/web_server/molecule/default/group_vars/parameters-optional.yml
+++ b/roles/web_server/molecule/default/group_vars/parameters-optional.yml
@@ -1,8 +1,8 @@
 ---
 
 default_enforce_https: false
-default_https_tls_certificate: "{{ lookup('file', 'tests/data/x509/parameters-optional_https.cert.pem') }}"
-default_https_tls_key: "{{ lookup('file', 'tests/data/x509/parameters-optional_https.key.pem') }}"
+default_https_tls_certificate: "{{ lookup('file', 'tests/data/x509/{{ inventory_hostname }}_https.cert.pem') }}"
+default_https_tls_key: "{{ lookup('file', 'tests/data/x509/{{ inventory_hostname }}_https.key.pem') }}"
 web_default_title: "Optional Welcome"
 web_default_message: "Welcome to parameters-optional, default virtual host."
 web_server_tls_protocols: