diff --git a/examples/guestbook/redis-slave-service.json b/examples/guestbook/redis-slave-service.json
index ee87e91252f..b317ae856e6 100644
--- a/examples/guestbook/redis-slave-service.json
+++ b/examples/guestbook/redis-slave-service.json
@@ -3,7 +3,7 @@
   "port": 10001,
   "labels": {
     "name": "redisslave"
-  }
+  },
   "selector": {
     "name": "redisslave"
   }