diff --git a/samples/XamlTestApplication/Views/MainWindow.paml b/samples/XamlTestApplication/Views/MainWindow.paml
index baa5c9d5dd..b94dda826f 100644
--- a/samples/XamlTestApplication/Views/MainWindow.paml
+++ b/samples/XamlTestApplication/Views/MainWindow.paml
@@ -53,8 +53,10 @@
                   <ListBox Items="{Binding Items}">
                     <ListBox.DataTemplates>
                       <DataTemplate DataType="vm:TestItem">
-                        <TextBlock Text="{Binding Header}" FontSize="24"/>
-                        <TextBlock Text="{Binding SubHeader}"/>
+                        <StackPanel>
+                          <TextBlock Text="{Binding Header}" FontSize="24"/>
+                          <TextBlock Text="{Binding SubHeader}"/>
+                        </StackPanel>
                       </DataTemplate>
                     </ListBox.DataTemplates>
                   </ListBox>