diff --git a/src/ClaudeDo.Installer/App.xaml.cs b/src/ClaudeDo.Installer/App.xaml.cs
index cd57389..31e38f8 100644
--- a/src/ClaudeDo.Installer/App.xaml.cs
+++ b/src/ClaudeDo.Installer/App.xaml.cs
@@ -90,8 +90,6 @@ public partial class App : Application
         // Core
         sc.AddSingleton<InstallContext>();
         sc.AddSingleton<PageResolver>();
-        sc.AddSingleton<InstallerService>();
-
         // HTTP + release client
         sc.AddSingleton(_ => new HttpClient { Timeout = TimeSpan.FromSeconds(15) });
         sc.AddSingleton<IReleaseClient>(sp => new ReleaseClient(sp.GetRequiredService<HttpClient>()));