diff --git a/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs b/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
index d00eecc0..0d7cd70a 100644
--- a/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
+++ b/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
@@ -97,6 +97,8 @@ protected override void OnInitialized( EventArgs e )
 
       _model.ChildrenTreeChanged += ( s, args ) =>
           {
+            if( args.Change != ChildrenTreeChange.DirectChildrenChanged )
+              return;
             if( _asyncRefreshCalled.HasValue &&
                       _asyncRefreshCalled.Value == args.Change )
               return;