diff --git a/docs/column-types.md b/docs/column-types.md
index 85f88abf..a46b9f72 100644
--- a/docs/column-types.md
+++ b/docs/column-types.md
@@ -90,8 +90,6 @@ new TemplateColumn<Person>(
         <DataTemplate x:Key="CheckBoxCell">
             <CheckBox IsChecked="{Binding IsSelected}"/>
         </DataTemplate>
-        
-    </DataTemplate>
               
     </TreeDataGrid.Resources>
 </TreeDataGrid>