diff --git a/designate/mdns/xfr.py b/designate/mdns/xfr.py
index c2b4b43e0..15b1b69f1 100644
--- a/designate/mdns/xfr.py
+++ b/designate/mdns/xfr.py
@@ -41,8 +41,7 @@ class XFRMixin(object):
             LOG.warning(e.message)
             return
 
-        zone = dnsutils.from_dnspython_zone(dnspython_zone)
-        zone.update(zone)
+        zone.update(dnsutils.from_dnspython_zone(dnspython_zone))
 
         zone.transferred_at = timeutils.utcnow()