diff --git a/swh/scanner/cli.py b/swh/scanner/cli.py
--- a/swh/scanner/cli.py
+++ b/swh/scanner/cli.py
@@ -107,7 +107,7 @@
 
 
 @scanner.command(name="scan")
-@click.argument("root_path", required=True, type=click.Path(exists=True))
+@click.argument("root_path", default=".", type=click.Path(exists=True))
 @click.option(
     "-u",
     "--api-url",