diff --git a/client/main.go b/client/main.go
index ec9742d..7a71a5a 100644
--- a/client/main.go
+++ b/client/main.go
@@ -131,7 +131,7 @@ func main() {
 		}
 		log.Println("communication mode:", c.String("mode"))
 		// kcp server
-		kcpconn, err := kcp.DialEncrypted(mode, c.Int("fec"), c.String("remoteaddr"), []byte(c.String("key")))
+		kcpconn, err := kcp.DialWithOptions(mode, c.Int("fec"), c.String("remoteaddr"), []byte(c.String("key")))
 		checkError(err)
 		log.Println("remote address:", c.String("remoteaddr"))
 		log.Println("sndwnd:", c.Int("sndwnd"), "rcvwnd:", c.Int("rcvwnd"))
diff --git a/server/main.go b/server/main.go
index fbdeb15..49b6071 100644
--- a/server/main.go
+++ b/server/main.go
@@ -157,7 +157,7 @@ func main() {
 			return
 		}
 
-		lis, err := kcp.ListenEncrypted(mode, c.Int("fec"), c.String("listen"), []byte(c.String("key")))
+		lis, err := kcp.ListenWithOptions(mode, c.Int("fec"), c.String("listen"), []byte(c.String("key")))
 		if err != nil {
 			log.Fatal(err)
 		}