diff --git a/roles/mail_forwarder/molecule/default/tests/test_default.py b/roles/mail_forwarder/molecule/default/tests/test_default.py
index 71028f2eed4e2dfb55ec8597b37e3dc2c99b1be1..2c9c90d342a4f07e134d35456654127207d1b5be 100644
--- a/roles/mail_forwarder/molecule/default/tests/test_default.py
+++ b/roles/mail_forwarder/molecule/default/tests/test_default.py
@@ -117,7 +117,8 @@ def test_smtp_server_uses_correct_dh_parameters(host):
     with host.sudo():
         expected_dhparam = host.file('/etc/ssl/private/%s_smtp.dh.pem' % hostname).content_string.rstrip()
 
-    connection = host.run("gnutls-cli --no-ca-verification --starttls-proto=smtp --port 25 --priority 'NONE:+VERS-TLS1.2:+CTYPE-X509:+COMP-NULL:+SIGN-RSA-SHA384:+DHE-RSA:+SHA384:+AEAD:+AES-256-GCM' --verbose localhost")
+    connection = host.run("gnutls-cli --no-ca-verification --starttls-proto=smtp --port 25 "
+                          "--priority 'NONE:+VERS-TLS1.2:+CTYPE-X509:+COMP-NULL:+SIGN-RSA-SHA384:+DHE-RSA:+SHA384:+AEAD:+AES-256-GCM' --verbose localhost")
 
     output = connection.stdout
     begin_marker = "-----BEGIN DH PARAMETERS-----"