diff --git a/api/tools/import_regions.py b/api/tools/import_regions.py
index 6d2d115..8649b92 100755
--- a/api/tools/import_regions.py
+++ b/api/tools/import_regions.py
@@ -86,7 +86,7 @@ async def main():
     url = url.replace("+asyncpg", "")
 
     async with await psycopg.AsyncConnection.connect(url) as connection:
-        await import_nuts(connection, sys.argv[1])
+        await import_nuts(connection, sys.argv[1] if len(sys.argv) > 1 else None)
 
 
 if __name__ == "__main__":