diff --git a/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java b/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java
index 4bebc796..ac5b3f87 100644
--- a/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java
+++ b/src/main/java/com/devopsdemo/tutorial/addressbook/AddressbookUI.java
@@ -18,7 +18,7 @@
 import com.vaadin.v7.ui.Grid;
 import com.vaadin.v7.ui.TextField;
 
-/* User Interface written in Java.
+/** User Interface written in Java.
  *
  * Define the user interface shown on the Vaadin generated web page by extending the UI class.
  * By default, a new UI instance is automatically created when the page is loaded. To reuse