diff --git a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/refresh/BusyView.java b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/refresh/BusyView.java
index 94d18d37239..25700dd0a1a 100644
--- a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/refresh/BusyView.java
+++ b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/refresh/BusyView.java
@@ -2,5 +2,9 @@ package com.sap.sailing.gwt.ui.client.refresh;
 
 import com.google.gwt.user.client.ui.IsWidget;
 
+/**
+ * View that shows a loading indicator.
+ *
+ */
 public interface BusyView extends IsWidget {
 }
diff --git a/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/mvp/ErrorView.java b/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/mvp/ErrorView.java
index 9783fe65282..8b820f2942c 100644
--- a/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/mvp/ErrorView.java
+++ b/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/mvp/ErrorView.java
@@ -2,6 +2,9 @@ package com.sap.sse.gwt.client.mvp;
 
 import com.google.gwt.user.client.ui.IsWidget;
 
+/**
+ * View that shows an application error.
+ */
 public interface ErrorView extends IsWidget {
 
 }