diff --git a/spring-boot-samples/spring-boot-sample-websocket-undertow/src/main/java/samples/websocket/SampleUndertowWebSocketsApplication.java b/spring-boot-samples/spring-boot-sample-websocket-undertow/src/main/java/samples/websocket/SampleUndertowWebSocketsApplication.java
index 938fc1d4f5..64454316c6 100644
--- a/spring-boot-samples/spring-boot-sample-websocket-undertow/src/main/java/samples/websocket/SampleUndertowWebSocketsApplication.java
+++ b/spring-boot-samples/spring-boot-sample-websocket-undertow/src/main/java/samples/websocket/SampleUndertowWebSocketsApplication.java
@@ -45,8 +45,10 @@ public class SampleUndertowWebSocketsApplication extends SpringBootServletInitia
 
 	@Override
 	public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
-		registry.addHandler(echoWebSocketHandler(), "/echo").withSockJS();
-		registry.addHandler(snakeWebSocketHandler(), "/snake").withSockJS();
+		registry.addHandler(echoWebSocketHandler(), "/echo").setAllowedOrigins("*")
+				.withSockJS();
+		registry.addHandler(snakeWebSocketHandler(), "/snake").setAllowedOrigins("*")
+				.withSockJS();
 	}
 
 	@Override