diff --git a/samples/ControlCatalog/SideBar.xaml b/samples/ControlCatalog/SideBar.xaml
index 26d25a6266..1ee6bf7a29 100644
--- a/samples/ControlCatalog/SideBar.xaml
+++ b/samples/ControlCatalog/SideBar.xaml
@@ -67,6 +67,9 @@
         <Setter Property="(ScrollViewer.HorizontalScrollBarVisibility)" Value="Auto"/>
         <Setter Property="(ScrollViewer.VerticalScrollBarVisibility)" Value="Auto"/>
     </Style>
+    <Style Selector="TabControl.sidebar > TabItem:selected /template/ Border#PART_SelectedPipe">
+        <Setter Property="IsVisible" Value="False" />
+    </Style>
     <Style Selector="TabControl.sidebar > TabItem:pointerover">
         <Setter Property="Opacity" Value="1"/>
     </Style>