diff --git a/swh/vault/cli.py b/swh/vault/cli.py
index 98dc6c4..867b4ad 100644
--- a/swh/vault/cli.py
+++ b/swh/vault/cli.py
@@ -1,50 +1,50 @@
 import logging
 import click
 import aiohttp
 
 from swh.vault.api.server import make_app_from_configfile
 
 
 CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])
 
 
 @click.command(context_settings=CONTEXT_SETTINGS)
 @click.option('--config-file', '-C', default=None,
               type=click.Path(exists=True, dir_okay=False,),
               help="Configuration file.")
 @click.option('--log-level', '-l', default='INFO',
               type=click.Choice(logging._nameToLevel.keys()),
               help="Log level (default to INFO)")
 @click.option('--no-stdout', is_flag=True, default=False,
               help="Do NOT output logs on the console")
 @click.option('--host', default='0.0.0.0', help="Host to run the server")
 @click.option('--port', default=5005, type=click.INT,
               help="Binding port of the server")
-@click.option('--debug/--nodebug', default=True,
+@click.option('--debug/--no-debug', default=True,
               help="Indicates if the server should run in debug mode")
 @click.pass_context
 def cli(ctx, config_file, log_level, no_stdout, host, port, debug):
     """Software Heritage Vault API server
 
     """
     from swh.scheduler.celery_backend.config import setup_log_handler
     log_level = setup_log_handler(
         loglevel=log_level, colorize=False,
         format='[%(levelname)s] %(name)s -- %(message)s',
         log_console=not no_stdout)
 
     try:
         app = make_app_from_configfile(config_file, debug=debug)
     except EnvironmentError as e:
         click.echo(e.msg, err=True)
         ctx.exit(1)
 
     aiohttp.web.run_app(app, host=host, port=int(port))
 
 
 def main():
     return cli(auto_envvar_prefix='SWH_VAULT')
 
 
 if __name__ == '__main__':
     main()