diff --git a/src/main/java/com/mydemo/tutorial/addressbook/AddressbookUI.java b/src/main/java/com/mydemo/tutorial/addressbook/AddressbookUI.java
index eafe268..6b52e03 100644
--- a/src/main/java/com/mydemo/tutorial/addressbook/AddressbookUI.java
+++ b/src/main/java/com/mydemo/tutorial/addressbook/AddressbookUI.java
@@ -44,7 +44,7 @@ public class AddressbookUI extends UI {
     ContactForm contactForm = new ContactForm();
 
     // ContactService is a in-memory mock DAO that mimics
-    // a real-world datasource. Typically implemented for
+    // a real-world datasource. Typically implemented for many instances at theITern
     // example as EJB or Spring Data based service.
     ContactService service = ContactService.createDemoService();
 
@@ -112,7 +112,7 @@ private void buildLayout() {
         mainLayout.setSizeFull();
         mainLayout.setExpandRatio(left, 1);
 
-        // Split and allow resizing
+        // Split and allow resizing of the rows
         setContent(mainLayout);
     }