diff --git a/src/main/java/com/ntlab/irisserver/WebSocketConfig.java b/src/main/java/com/ntlab/irisserver/WebSocketConfig.java
index c3c9744..76648fe 100644
--- a/src/main/java/com/ntlab/irisserver/WebSocketConfig.java
+++ b/src/main/java/com/ntlab/irisserver/WebSocketConfig.java
@@ -1,4 +1,5 @@
 package com.ntlab.irisserver;
+
 import com.ntlab.irisserver.websockets.HelloWorldWebSocket;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -12,7 +13,7 @@
 
     @Override
     public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
-//        registry.addHandler(helloWorldWebSocketHandler(), "/ws");
+        //registry.addHandler(helloWorldWebSocket2(), "/hello-websocket2");
     }
 
     @Bean
diff --git a/src/main/java/com/ntlab/irisserver/websockets/HelloWorldWebSocket.java b/src/main/java/com/ntlab/irisserver/websockets/HelloWorldWebSocket.java
index fd40c06..9598f46 100644
--- a/src/main/java/com/ntlab/irisserver/websockets/HelloWorldWebSocket.java
+++ b/src/main/java/com/ntlab/irisserver/websockets/HelloWorldWebSocket.java
@@ -16,7 +16,7 @@
 
 // ５秒に１回HelloWorldを送るデモ
 @ServerEndpoint("/hello-websocket")
-public class HelloWorldWebSocket {
+public class HelloWorldWebSocket extends TextWebSocketHandler {
     private static final Queue<Session> sessions = new ConcurrentLinkedQueue<>();
 
     static {