diff --git a/src/Main/SharpDevelop/Dom/ClassBrowser/ClassBrowserPad.cs b/src/Main/SharpDevelop/Dom/ClassBrowser/ClassBrowserPad.cs
index 7e21b1743e..72d770a8ac 100644
--- a/src/Main/SharpDevelop/Dom/ClassBrowser/ClassBrowserPad.cs
+++ b/src/Main/SharpDevelop/Dom/ClassBrowser/ClassBrowserPad.cs
@@ -19,6 +19,7 @@ using ICSharpCode.SharpDevelop.Workbench;
 
 namespace ICSharpCode.SharpDevelop.Dom.ClassBrowser
 {
+	// Note: This class must be public for XAML serialization/deserialization!
 	public class PersistedWorkspace
 	{
 		public PersistedWorkspace()