diff --git a/spring-boot-samples/spring-boot-sample-actuator/src/main/resources/application.properties b/spring-boot-samples/spring-boot-sample-actuator/src/main/resources/application.properties
index a6ea2329da..f4f859e7c4 100644
--- a/spring-boot-samples/spring-boot-sample-actuator/src/main/resources/application.properties
+++ b/spring-boot-samples/spring-boot-sample-actuator/src/main/resources/application.properties
@@ -7,6 +7,7 @@ server.tomcat.basedir: target/tomcat
 server.tomcat.access_log_pattern: %h %t "%r" %s %b
 security.require_ssl: false
 service.name: Phil
+http.mappers.json_pretty_print: true
 shell.ssh.enabled: true
 shell.ssh.port: 2222
 #shell.telnet.enabled: false