diff --git a/samples/RenderTest/SideBar.xaml b/samples/RenderTest/SideBar.xaml
index 784d1f4071..7fcd828ba3 100644
--- a/samples/RenderTest/SideBar.xaml
+++ b/samples/RenderTest/SideBar.xaml
@@ -1,4 +1,4 @@
-<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">>
+<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Style Selector="TabControl.sidebar">
     <Setter Property="Template">
       <ControlTemplate>