diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp.App/Program.cs b/src/GuiApp/Avalonia/FileTime.GuiApp.App/Program.cs
index b76c324..4aa6f13 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp.App/Program.cs
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp.App/Program.cs
@@ -18,18 +18,6 @@ public static class Program
     public static string AppDataRoot { get; private set; }
     public static string EnvironmentName { get; private set; }
 
-    static Program()
-    {
-#if DEBUG
-        InitDevelopment();
-#else
-        InitRelease();
-#endif
-        InitLogging();
-
-        Log.Logger.Information("Early app starting...");
-    }
-
     private static void InitDevelopment()
     {
         EnvironmentName = "Development";
@@ -92,6 +80,15 @@ public static class Program
     [STAThread]
     public static void Main(string[] args)
     {
+#if DEBUG
+        InitDevelopment();
+#else
+        InitRelease();
+#endif
+        InitLogging();
+
+        Log.Logger.Information("Early app starting...");
+
         AppDomain.CurrentDomain.FirstChanceException -= OnFirstChanceException;
         AppDomain.CurrentDomain.UnhandledException -= OnAppDomainUnhandledException;
         TaskScheduler.UnobservedTaskException -= OnTaskSchedulerUnobservedTaskException;
@@ -117,13 +114,13 @@ public static class Program
             .UseReactiveUI()
             .LogToTrace();
 
-    private static void OnTaskSchedulerUnobservedTaskException(object? sender, UnobservedTaskExceptionEventArgs e) 
+    private static void OnTaskSchedulerUnobservedTaskException(object? sender, UnobservedTaskExceptionEventArgs e)
         => HandleUnhandledException(sender, e.Exception);
 
-    private static void OnAppDomainUnhandledException(object sender, UnhandledExceptionEventArgs e) 
+    private static void OnAppDomainUnhandledException(object sender, UnhandledExceptionEventArgs e)
         => HandleUnhandledException(sender, e.ExceptionObject as Exception);
 
-    private static void OnFirstChanceException(object? sender, FirstChanceExceptionEventArgs e) 
+    private static void OnFirstChanceException(object? sender, FirstChanceExceptionEventArgs e)
         => HandleUnhandledException(sender, e.Exception);
 
     private static void HandleUnhandledException(object? sender, Exception? ex, [CallerMemberName] string caller = "")
@@ -135,7 +132,7 @@ public static class Program
             sender?.GetType().ToString() ?? "null",
             sender?.ToString() ?? "null",
             ex);
-        
+
         Log.CloseAndFlush();
     }
 }
\ No newline at end of file
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/ViewModels/MainWindowDesignViewModel.cs b/src/GuiApp/Avalonia/FileTime.GuiApp/ViewModels/MainWindowDesignViewModel.cs
index ae4892e..8f2b1ff 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp/ViewModels/MainWindowDesignViewModel.cs
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/ViewModels/MainWindowDesignViewModel.cs
@@ -10,7 +10,7 @@ namespace FileTime.GuiApp.ViewModels;
 public class MainWindowDesignViewModel : IMainWindowViewModel
 {
     public bool Loading => false;
-    public IObservable<string?> MainFont { get; } = new BehaviorSubject<string?>("");
+    public IObservable<string?> MainFont { get; } = new BehaviorSubject<string?>(null);
     public string Title => "FileTime Design Preview";
     public IGuiAppState AppState { get; }
     public IItemPreviewService ItemPreviewService { get; }
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml b/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml
index dcca1b8..c5ae642 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp/Views/MainWindow.axaml
@@ -11,6 +11,7 @@
     RequestedThemeVariant="Dark"
     Title="FileTime"
     TransparencyLevelHint="Blur"
+    d:DataContext="vm:MainWindowDesignViewModel"
     d:DesignHeight="450"
     d:DesignWidth="800"
     mc:Ignorable="d"