diff --git a/tsnet/example/web-client/web-client.go b/tsnet/example/web-client/web-client.go
index c8570fe49..add275e50 100644
--- a/tsnet/example/web-client/web-client.go
+++ b/tsnet/example/web-client/web-client.go
@@ -14,6 +14,7 @@ import (
 )
 
 var (
+	addr    = flag.String("addr", "localhost:8060", "address of Tailscale web client")
 	devMode = flag.Bool("dev", false, "run web client in dev mode")
 )
 
@@ -23,12 +24,6 @@ func main() {
 	s := new(tsnet.Server)
 	defer s.Close()
 
-	ln, err := s.Listen("tcp", ":80")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer ln.Close()
-
 	lc, err := s.LocalClient()
 	if err != nil {
 		log.Fatal(err)
@@ -37,7 +32,8 @@ func main() {
 	// Serve the Tailscale web client.
 	ws, cleanup := web.NewServer(*devMode, lc)
 	defer cleanup()
-	if err := http.Serve(ln, ws); err != nil {
+	log.Printf("Serving Tailscale web client on http://%s", *addr)
+	if err := http.ListenAndServe(*addr, ws); err != nil {
 		if err != http.ErrServerClosed {
 			log.Fatal(err)
 		}