diff --git a/scripts/standardise_validate.py b/scripts/standardise_validate.py
index 0c41bb0a4..468fb6117 100644
--- a/scripts/standardise_validate.py
+++ b/scripts/standardise_validate.py
@@ -16,7 +16,7 @@ def main() -> None:
     parser = argparse.ArgumentParser()
     parser.add_argument("--preset", dest="preset", required=True)
     parser.add_argument("--source", dest="source", nargs="+", required=True)
-    parser.add_argument("--cutline", dest="cutline", help="Optional cutline to cut imagery to", required=False)
+    parser.add_argument("--cutline", dest="cutline", help="Optional cutline to cut imagery to", required=False, nargs="?")
     parser.add_argument("--scale", dest="scale", help="Tile grid scale to align output tile to", required=True)
     parser.add_argument("--collection-id", dest="collection_id", help="Unique id for collection", required=True)
     parser.add_argument(