diff --git a/roles/xmpp_server/molecule/default/tests/test_optional.py b/roles/xmpp_server/molecule/default/tests/test_optional.py
index abfd7c6d423c58d3f7cb4f454cb6992c6d76a401..c7aaed13a2887e3f751f59ef17aa31aa3aa6199b 100644
--- a/roles/xmpp_server/molecule/default/tests/test_optional.py
+++ b/roles/xmpp_server/molecule/default/tests/test_optional.py
@@ -87,3 +87,24 @@ def test_correct_prosody_package_installed(host):
     """
 
     assert host.package('prosody-0.9').is_installed
+
+
+def test_xmpp_server_uses_correct_dh_parameters(host):
+    """
+    Tests if the HTTP server uses the generated Diffie-Helman parameter.
+    """
+
+    fqdn = host.run('hostname -f').stdout.strip()
+
+    with host.sudo():
+        expected_dhparam = host.file('/etc/ssl/private/%s_xmpp.dh.pem' % fqdn).content_string.rstrip()
+
+    connection = host.run("gnutls-cli --no-ca-verification --starttls-proto=xmpp --port 5222 "
+                          "--priority 'NONE:+VERS-TLS1.2:+CTYPE-X509:+COMP-NULL:+SIGN-RSA-SHA384:+DHE-RSA:+SHA384:+AEAD:+AES-256-GCM' --verbose domain2")
+
+    output = connection.stdout
+    begin_marker = "-----BEGIN DH PARAMETERS-----"
+    end_marker = "-----END DH PARAMETERS-----"
+    used_dhparam = output[output.find(begin_marker):output.find(end_marker) + len(end_marker)]
+
+    assert used_dhparam == expected_dhparam