diff --git a/src/MainDemo.Wpf/Trees.xaml b/src/MainDemo.Wpf/Trees.xaml
index 994415ba0b..a3321b5904 100644
--- a/src/MainDemo.Wpf/Trees.xaml
+++ b/src/MainDemo.Wpf/Trees.xaml
@@ -214,9 +214,8 @@
ItemsSource="{Binding TreeItems}"
SelectedItem="{Binding SelectedTreeItem}">
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