diff --git a/server.go b/server.go
index d895acd1..face6584 100644
--- a/server.go
+++ b/server.go
@@ -66,9 +66,6 @@ func Register(instance, service, domain string, port int, text []string, ifaces
 	if entry.Domain == "" {
 		entry.Domain = "local."
 	}
-	if entry.Port == 0 {
-		return nil, fmt.Errorf("missing port")
-	}
 
 	var err error
 	if entry.HostName == "" {
@@ -127,9 +124,6 @@ func RegisterProxy(instance, service, domain string, port int, host string, ips
 	if entry.Domain == "" {
 		entry.Domain = "local"
 	}
-	if entry.Port == 0 {
-		return nil, fmt.Errorf("missing port")
-	}
 
 	if !strings.HasSuffix(trimDot(entry.HostName), entry.Domain) {
 		entry.HostName = fmt.Sprintf("%s.%s.", trimDot(entry.HostName), trimDot(entry.Domain))