diff --git a/nixos/lib/test-driver/test_driver/__init__.py b/nixos/lib/test-driver/test_driver/__init__.py
index 498a4f56c55..61d91c9ed65 100755
--- a/nixos/lib/test-driver/test_driver/__init__.py
+++ b/nixos/lib/test-driver/test_driver/__init__.py
@@ -61,7 +61,7 @@ def main() -> None:
         "-I",
         "--interactive",
         help="drop into a python repl and run the tests interactively",
-        action="store_true",
+        action=argparse.BooleanOptionalAction,
     )
     arg_parser.add_argument(
         "--start-scripts",