diff --git a/templates/csharp/xplat/AvaloniaTest.Desktop/Program.cs b/templates/csharp/xplat/AvaloniaTest.Desktop/Program.cs
index 9954f27c..eb1b08b4 100644
--- a/templates/csharp/xplat/AvaloniaTest.Desktop/Program.cs
+++ b/templates/csharp/xplat/AvaloniaTest.Desktop/Program.cs
@@ -16,6 +16,7 @@ public static void Main(string[] args) => BuildAvaloniaApp()
         public static AppBuilder BuildAvaloniaApp()
             => AppBuilder.Configure<App>()
                 .UsePlatformDetect()
-                .LogToTrace();
+                .LogToTrace()
+                .UseReactiveUI();
     }
 }