diff --git a/samples/Sandbox/App.axaml b/samples/Sandbox/App.axaml
index 1c74c07b1d..f601f9f78f 100644
--- a/samples/Sandbox/App.axaml
+++ b/samples/Sandbox/App.axaml
@@ -3,6 +3,6 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     x:Class="Sandbox.App">
     <Application.Styles>
-        <FluentTheme Mode="Light"/>
+        <FluentTheme Mode="Dark"/>
     </Application.Styles>
 </Application>