diff --git a/wo/cli/plugins/site.py b/wo/cli/plugins/site.py
index 8d1f69f..e20a6d6 100644
--- a/wo/cli/plugins/site.py
+++ b/wo/cli/plugins/site.py
@@ -812,7 +812,7 @@ class WOSiteUpdateController(CementBaseController):
             (['--dns'],
                 dict(help="choose dns provider api for letsencrypt",
                      action='store' or 'store_const',
-                     const='cf', nargs='?')),
+                     const='dns_cf', nargs='?')),
             (['--hsts'],
                 dict(help="configure hsts for the site",
                      action='store' or 'store_const',