diff --git a/src/main/java/info/istlab/ServerTester/UDPServer.java b/src/main/java/info/istlab/ServerTester/UDPServer.java
index ddb64e5..c3e4117 100644
--- a/src/main/java/info/istlab/ServerTester/UDPServer.java
+++ b/src/main/java/info/istlab/ServerTester/UDPServer.java
@@ -71,13 +71,13 @@
                 System.out.println(received);
 
                 // 返信メッセージを作成
-                // String response = "サーバーからの応答: " + received;
-                // byte[] responseData = response.getBytes();
-                // // 返信データを送信
-                // DatagramPacket responsePacket = new DatagramPacket(
-                // responseData, responseData.length,
-                // packet.getAddress(), packet.getPort());
-                // socket.send(responsePacket);
+                String response = "サーバーからの応答: " + received;
+                byte[] responseData = response.getBytes();
+                // 返信データを送信
+                DatagramPacket responsePacket = new DatagramPacket(
+                responseData, responseData.length,
+                packet.getAddress(), packet.getPort());
+                socket.send(responsePacket);
             } catch(SocketException sx) {
                 thread = null;
             } catch (Exception e) {