diff --git a/ChangeLog b/ChangeLog
index 2e748d53f..7037c7dcc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2003-11-04  Mike Kestner  <mkestner@ximian.com>
+
+	* gtk/TreeNodeAttribute.cs : sealed per Ben Maurer's suggestion.
+	* gtk/TreeNodeValueAttribute.cs : ditto
+
 2003-11-04  Mike Kestner  <mkestner@ximian.com>
 
 	* glib/Value.cs : add set to Val prop
diff --git a/gtk/TreeNodeAttribute.cs b/gtk/TreeNodeAttribute.cs
index a93308552..4344c001a 100644
--- a/gtk/TreeNodeAttribute.cs
+++ b/gtk/TreeNodeAttribute.cs
@@ -9,7 +9,7 @@ namespace Gtk {
 	using System;
 
 	[AttributeUsage(AttributeTargets.Class)]
-	public class TreeNodeAttribute : Attribute {
+	public sealed class TreeNodeAttribute : Attribute {
 		int col_count;
 
 		public int ColumnCount {
diff --git a/gtk/TreeNodeValueAttribute.cs b/gtk/TreeNodeValueAttribute.cs
index 4bc2ec9ea..ff0db3d44 100644
--- a/gtk/TreeNodeValueAttribute.cs
+++ b/gtk/TreeNodeValueAttribute.cs
@@ -9,7 +9,7 @@ namespace Gtk {
 	using System;
 
 	[AttributeUsage(AttributeTargets.Property)]
-	public class TreeNodeValueAttribute : Attribute {
+	public sealed class TreeNodeValueAttribute : Attribute {
 		int col;
 
 		public int Column {