diff --git a/samples/ControlCatalog.Desktop/Program.cs b/samples/ControlCatalog.Desktop/Program.cs
index a2048005a4..329b2ab5a3 100644
--- a/samples/ControlCatalog.Desktop/Program.cs
+++ b/samples/ControlCatalog.Desktop/Program.cs
@@ -22,7 +22,7 @@ namespace ControlCatalog
         /// This method is needed for IDE previewer infrastructure
         /// </summary>
         public static AppBuilder BuildAvaloniaApp()
-            => AppBuilder.Configure<App>().LogToDebug().UsePlatformDetect();
+            => AppBuilder.Configure<App>().LogToDebug().UsePlatformDetect().UseReactiveUI();
 
         private static void ConfigureAssetAssembly(AppBuilder builder)
         {