diff --git a/wo/cli/plugins/site_functions.py b/wo/cli/plugins/site_functions.py
index 95f656d..f89b5ac 100644
--- a/wo/cli/plugins/site_functions.py
+++ b/wo/cli/plugins/site_functions.py
@@ -1436,7 +1436,7 @@ def setupLetsEncryptSubdomain(self, wo_domain_name):
 # setup letsencrypt for domain + www.domain
 
 
-def setupLetsEncryptWildcard(self, wo_domain_name, wo_acme_dns=dns_cf):
+def setupLetsEncryptWildcard(self, wo_domain_name, wo_acme_dns='dns_cf'):
 
     if os.path.isfile("/etc/letsencrypt/renewal/{0}_ecc/{0}.conf"
                       .format(wo_domain_name)):