diff --git a/tests/unittests/test_util.py b/tests/unittests/test_util.py
index 1290cbc69f1..93d85f15d05 100644
--- a/tests/unittests/test_util.py
+++ b/tests/unittests/test_util.py
@@ -972,11 +972,17 @@ def test_is_lxd_false_when_sock_device_absent(self, m_exists):
 
 
 class TestReadCcFromCmdline:
+    if hasattr(pytest, "param"):
+        random_string = pytest.param(
+            CiTestCase.random_string(), None, id="random_string")
+    else:
+        random_string = (CiTestCase.random_string(), None)
+
     @pytest.mark.parametrize(
         "cmdline,expected_cfg",
         [
             # Return None if cmdline has no cc:<YAML>end_cc content.
-            (CiTestCase.random_string(), None),
+            random_string,
             # Return None if YAML content is empty string.
             ('foo cc: end_cc bar', None),
             # Return expected dictionary without trailing end_cc marker.