diff --git a/smoke-test/spring-boot-smoke-test-web-groovy-templates/src/main/java/smoketest/groovytemplates/SampleGroovyTemplateApplication.java b/smoke-test/spring-boot-smoke-test-web-groovy-templates/src/main/java/smoketest/groovytemplates/SampleGroovyTemplateApplication.java
index 5bbf5d97f91..d9a64fa2472 100644
--- a/smoke-test/spring-boot-smoke-test-web-groovy-templates/src/main/java/smoketest/groovytemplates/SampleGroovyTemplateApplication.java
+++ b/smoke-test/spring-boot-smoke-test-web-groovy-templates/src/main/java/smoketest/groovytemplates/SampleGroovyTemplateApplication.java
@@ -33,12 +33,7 @@ public class SampleGroovyTemplateApplication {
 
 	@Bean
 	public Converter<String, @Nullable Message> messageConverter() {
-		return new Converter<String, @Nullable Message>() {
-			@Override
-			public @Nullable Message convert(String id) {
-				return messageRepository().findMessage(Long.valueOf(id));
-			}
-		};
+		return (id) -> messageRepository().findMessage(Long.valueOf(id));
 	}
 
 	public static void main(String[] args) {