diff --git a/bin/tests/system/isctest/util.py b/bin/tests/system/isctest/util.py
new file mode 100644
index 0000000000..7863fdc8b5
--- /dev/null
+++ b/bin/tests/system/isctest/util.py
@@ -0,0 +1,18 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+import pytest
+
+
+def param(*args, **kwargs):
+    if "id" not in kwargs:
+        kwargs["id"] = args[0]  # use first argument  as test ID
+    return pytest.param(*args, **kwargs)