diff --git a/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java b/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java
index 4bebc796..c19f9d76 100644
--- a/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java
+++ b/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java
@@ -63,7 +63,7 @@ protected void init(VaadinRequest request) {
 
     private void configureComponents() {
         /*
-         * Synchronous event handling.
+         *88 Synchronous event handling.
          *
          * Receive user interaction events on the server-side. This allows you
          * to synchronously handle those events. Vaadin automatically sends only