diff --git a/dotnet-desktop-guide/framework/wpf/getting-started/walkthrough-my-first-wpf-desktop-application.md b/dotnet-desktop-guide/framework/wpf/getting-started/walkthrough-my-first-wpf-desktop-application.md
index 8f6afc1..3f6352b 100644
--- a/dotnet-desktop-guide/framework/wpf/getting-started/walkthrough-my-first-wpf-desktop-application.md
+++ b/dotnet-desktop-guide/framework/wpf/getting-started/walkthrough-my-first-wpf-desktop-application.md
@@ -454,7 +454,7 @@ In this section, you'll update the UI for each item in the data-bound lists by u
 
     [!code-xaml[ExpenseIt#30](~/samples/snippets/csharp/VS_Snippets_Wpf/ExpenseIt/CSharp/ExpenseIt9/ExpenseReportPage.xaml#30)]
 
-4. Replace the <xref:System.Windows.Controls.DataGridTextColumn> elements with <xref:System.Windows.Controls.DataGridTemplateColumn> under the <xref:System.Windows.Controls.DataGrid> element and apply the templates to them.
+4. Replace the <xref:System.Windows.Controls.DataGridTextColumn> elements with <xref:System.Windows.Controls.DataGridTemplateColumn> under the <xref:System.Windows.Controls.DataGrid> element and apply the templates to them. Also, specify the `ItemsSource` attribute with its value in the `DataGrid` Element.
 
     [!code-xaml[ExpenseIt#32](~/samples/snippets/csharp/VS_Snippets_Wpf/ExpenseIt/CSharp/ExpenseIt9/ExpenseReportPage.xaml#32)]