diff --git a/functional_tests/test_renew.py b/functional_tests/test_renew.py
index 925d22e0a5763f3fc975e1c8580f8eff0cdd59f4..c446cf3b1643ed283cc23e9fcfbb6c59e8c9a6f9 100644
--- a/functional_tests/test_renew.py
+++ b/functional_tests/test_renew.py
@@ -317,8 +317,8 @@ def test_renew_update_dns_option(tmpdir):
 
     # He notices there is an option for updating DNS subject
     # alternative names.
-    assert " --update-dns-names DNS_NAMES" in stdout
-    assert " -u DNS_NAMES\n" in stdout
+    assert " --update-dns-names" in stdout
+    assert " -u" in stdout
 
     # Based on help description, this seems to be exactly what he
     # needs.He goes ahead and runs the renewal command, specifying