diff --git a/cmd/dd/dd.go b/cmd/dd/dd.go
index e7106e0..2f7fd9a 100644
--- a/cmd/dd/dd.go
+++ b/cmd/dd/dd.go
@@ -60,8 +60,9 @@ func updateDnsRecord(domain string, ip string, hmac string, keyname string, secr
 
 	update := fmt.Sprintf(`server %s
                            key %s:%s %s
+                           update delete %s
                            update add %s %d a %s
-                           send`, config.DnsServer, hmac, keyname, secret, domain, config.DnsTTL, ip)
+                           send`, config.DnsServer, hmac, keyname, secret, domain, domain, config.DnsTTL, ip)
 
 	_, err = io.WriteString(f, update)
 	if err != nil {