diff --git a/swh/scanner/cli.py b/swh/scanner/cli.py
index 8554210..255c94f 100644
--- a/swh/scanner/cli.py
+++ b/swh/scanner/cli.py
@@ -1,47 +1,47 @@
 # Copyright (C) 2020  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import click
 import asyncio
 from pathlib import PosixPath
 
 from .scanner import run
 from .model import Tree
 
 from swh.core.cli import CONTEXT_SETTINGS
 
 @click.group(name='scanner', context_settings=CONTEXT_SETTINGS)
 @click.pass_context
 def scanner(ctx):
     '''Software Heritage Scanner tools.'''
     pass
 
 
 def parse_url(url):
     if not url.startswith('http://') or not url.startswith('https://'):
         url = 'https://' + url
     if not url.endswith('/'):
         url += '/'
     return url
 
 
 @scanner.command(name='scan')
 @click.argument('path', required=True, type=click.Path(exists=True))
-@click.option('--api-url', default='archive.softwareheritage.org/api/1',
+@click.option('--api-url', default='https://archive.softwareheritage.org/api/1',
               metavar='API_URL', show_default=True,
               help="url for the api request")
 @click.pass_context
 def scan(ctx, path, api_url):
     """Scan a source code project to discover files and directories already
     present in the archive"""
     api_url = parse_url(api_url)
     source_tree = Tree(PosixPath(path))
     loop = asyncio.get_event_loop()
     loop.run_until_complete(run(path, api_url, source_tree))
     source_tree.show()
 
 
 if __name__ == '__main__':
     scan()