diff --git a/spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/Endpoint.java b/spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/Endpoint.java
index fe22c619d8a..c18abd8623a 100644
--- a/spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/Endpoint.java
+++ b/spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/Endpoint.java
@@ -25,7 +25,7 @@ import org.springframework.stereotype.Component;
 @Path("/hello")
 public class Endpoint {
 
-	private Service service;
+	private final Service service;
 
 	public Endpoint(Service service) {
 		this.service = service;