diff --git a/tests/unittests/conftest.py b/tests/unittests/conftest.py
index f8f06d420095..df41afe351d4 100644
--- a/tests/unittests/conftest.py
+++ b/tests/unittests/conftest.py
@@ -88,18 +88,8 @@ def fake_filesystem(mocker, tmpdir):
 
 
 @pytest.fixture(scope="session", autouse=True)
-def disable_sysfs_net(request, tmpdir_factory):
-    """Avoid tests which read the undertying host's /syc/class/net.
-
-    To allow unobscured reads of /sys/class/net on the host we can
-    parametrize the fixture with:
-
-    @pytest.mark.parametrize("disable_sysfs_net", [False], indirect=True)
-    """
-    if hasattr(request, "param") and getattr(request, "param") is False:
-        # Test disabled this fixture, perform no mocks.
-        yield
-        return
+def disable_sysfs_net(tmpdir_factory):
+    """Avoid tests which read the undertying host's /syc/class/net."""
     mock_sysfs = f"{tmpdir_factory.mktemp('sysfs')}/"
     with mock.patch(
         "cloudinit.net.get_sys_class_path", return_value=mock_sysfs
diff --git a/tests/unittests/net/test_init.py b/tests/unittests/net/test_init.py
index 67621b1c0bc2..85625448733f 100644
--- a/tests/unittests/net/test_init.py
+++ b/tests/unittests/net/test_init.py
@@ -43,10 +43,7 @@ def test_sys_dev_path_without_path(self):
 
 class TestReadSysNet:
     @pytest.fixture(autouse=True)
-    @pytest.mark.parametrize(
-        "disable_sysfs_net", [False], indirect=["disable_sysfs_net"]
-    )
-    def setup(self, disable_sysfs_net, tmpdir_factory):
+    def setup(self, tmpdir_factory):
         # We mock invididual numbered tmpdirs here because these tests write
         # to the sysfs directory and stale test artifacts break later tests.
         mock_sysfs = f"{tmpdir_factory.mktemp('sysfs', numbered=True)}/"