diff --git a/marrow/mailer/transport/smtp.py b/marrow/mailer/transport/smtp.py
index 3f93489..3e141f3 100644
--- a/marrow/mailer/transport/smtp.py
+++ b/marrow/mailer/transport/smtp.py
@@ -68,7 +68,7 @@ def shutdown(self):
 
     def connect_to_server(self):
         if self.tls == 'ssl': # pragma: no cover
-            connection = SMTP_SSL(local_hostname=self.local_hostname, keyfile=self.keyfile,
+            connection = SMTP_SSL(host=None, local_hostname=self.local_hostname, keyfile=self.keyfile,
                                   certfile=self.certfile, timeout=self.timeout)
         else:
             connection = SMTP(local_hostname=self.local_hostname, timeout=self.timeout)