diff --git a/Stars Assistant/ViewModels/MainWindowViewModel.cs b/Stars Assistant/ViewModels/MainWindowViewModel.cs
index 4e6184f..1eaf568 100644
--- a/Stars Assistant/ViewModels/MainWindowViewModel.cs	
+++ b/Stars Assistant/ViewModels/MainWindowViewModel.cs	
@@ -12,14 +12,16 @@ public partial class MainWindowViewModel : ViewModelBase, IActivatableViewModel
 {
     public ViewModelActivator Activator { get; } = new ViewModelActivator();
 
-    [ObservableAsProperty]
-    private string _dbPath = "";
+    [Reactive]
+    private string _dbPath;
+
+    [Reactive]
+    private BuColViewModel? _buColViewModel = new();
 
     public MainWindowViewModel()
     {
         using var db = Locator.Current.GetService<StarsDatabase>()!;
-        _dbPathHelper = Observable.Return(Path.GetFullPath(db.DbPath))
-            .ToProperty(this, x => x.DbPath);
+        DbPath = Path.GetFullPath(db.DbPath);
 
         this.WhenActivated((CompositeDisposable disposables) => 
         {
diff --git a/Stars Assistant/Views/BuColView.axaml.cs b/Stars Assistant/Views/BuColView.axaml.cs
index 246a676..d6afd39 100644
--- a/Stars Assistant/Views/BuColView.axaml.cs	
+++ b/Stars Assistant/Views/BuColView.axaml.cs	
@@ -1,3 +1,4 @@
+using System.ComponentModel.DataAnnotations;
 using System.Reactive.Disposables;
 using Avalonia;
 using Avalonia.Controls;
@@ -12,13 +13,9 @@ public partial class BuColView : ReactiveUserControl<BuColViewModel>
 {
     public BuColView()
     {
-        /*
         this.WhenActivated(disposables => 
         {
         });
-        */
-
-        this.ViewModel = new BuColViewModel();
 
         InitializeComponent();
     }
diff --git a/Stars Assistant/Views/MainWindow.axaml b/Stars Assistant/Views/MainWindow.axaml
index 2185686..b007376 100644
--- a/Stars Assistant/Views/MainWindow.axaml	
+++ b/Stars Assistant/Views/MainWindow.axaml	
@@ -26,7 +26,8 @@
             </Grid>
         </TabItem>
         <TabItem Header="BuCol">
-            <views:BuColView />
+            <views:BuColView x:Name="BuColView" 
+                DataContext="{Binding BuColViewModel}" />
         </TabItem>
     </TabControl>
 </Window>