diff --git a/wo/cli/plugins/site.py b/wo/cli/plugins/site.py
index 2bfe7cf..9281f71 100644
--- a/wo/cli/plugins/site.py
+++ b/wo/cli/plugins/site.py
@@ -1286,7 +1286,7 @@ class WOSiteUpdateController(CementBaseController):
                             setupLetsEncrypt(self, wo_domain, True)
                         httpsRedirect(self, wo_domain)
                     elif self.app.pargs.letsencrypt == "wildcard":
-                        setupLetsEncrypt(self, wo_domain, false, True,
+                        setupLetsEncrypt(self, wo_domain, False, True,
                                          True, wo_acme_dns)
                         httpsRedirect(self, wo_domain, True, True)
                 else:
diff --git a/wo/cli/plugins/site_functions.py b/wo/cli/plugins/site_functions.py
index 89d09bc..1cf9a70 100644
--- a/wo/cli/plugins/site_functions.py
+++ b/wo/cli/plugins/site_functions.py
@@ -1268,8 +1268,8 @@ def doCleanupAction(self, domain='', webroot='', dbname='', dbuser='',
 
 
 # setup letsencrypt for domain + www.domain
-def setupLetsEncrypt(self, wo_domain_name, subdomain=false, wildcard=false,
-                     wo_dns=false, wo_acme_dns='dns_cf'):
+def setupLetsEncrypt(self, wo_domain_name, subdomain=False, wildcard=False,
+                     wo_dns=False, wo_acme_dns='dns_cf'):
 
     if os.path.isfile("/etc/letsencrypt/"
                       "renewal/{0}_ecc/"