diff --git a/intermediate/tcp-client-server-multiplex/src/main/java/org/springframework/integration/samples/tcpclientserver/EchoService.java b/intermediate/tcp-client-server-multiplex/src/main/java/org/springframework/integration/samples/tcpclientserver/EchoService.java
index ad10e3d9..5fab2338 100644
--- a/intermediate/tcp-client-server-multiplex/src/main/java/org/springframework/integration/samples/tcpclientserver/EchoService.java
+++ b/intermediate/tcp-client-server-multiplex/src/main/java/org/springframework/integration/samples/tcpclientserver/EchoService.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.integration.samples.tcpclientserver;
 
 import org.springframework.integration.MessageTimeoutException;
@@ -22,6 +23,8 @@ import org.springframework.integration.MessageTimeoutException;
  * converts it to a String and appends it with ':echo'.
  *
  * @author Gary Russell
+ * @author Artem Bilan
+ *
  * @since 2.1
  *
  */
@@ -32,7 +35,7 @@ public class EchoService {
 			throw new RuntimeException("Failure Demonstration");
 		}
 		else if(input.startsWith("TIMEOUT_TEST")) {
-			Thread.sleep(3000);
+			Thread.sleep(50000);
 		}
 
 		return input + ":echo";