diff --git a/cloudinit/config/tests/test_resolv_conf.py b/cloudinit/config/tests/test_resolv_conf.py
index f3d97b8276d..6546a0b5ba8 100644
--- a/cloudinit/config/tests/test_resolv_conf.py
+++ b/cloudinit/config/tests/test_resolv_conf.py
@@ -35,8 +35,8 @@ def test_target_fname_is_used_if_passed(self, m_render_to_file):
     # Patch in templater so we can assert on the actual generated content
     @mock.patch("cloudinit.templater.util.write_file")
     # Parameterise with the value to be passed to generate_resolv_conf as the
-    # `params` parameter, and a list of the expected lines after the header as
-    # `extra_lines`.
+    # params parameter, and the expected line after the header as
+    # expected_extra_line.
     @pytest.mark.parametrize(
         "params,expected_extra_line",
         [