diff --git a/UI/Services/DialogService.cs b/UI/Services/DialogService.cs
index c700b52..8c823fa 100644
--- a/UI/Services/DialogService.cs
+++ b/UI/Services/DialogService.cs
@@ -1,11 +1,9 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
-using TagHierarchyManager.Models;
 using TagHierarchyManager.UI.ViewModels;
 using TagHierarchyManager.UI.Views;
 
@@ -15,7 +13,7 @@ public class DialogService
 {
     public async Task<TResult?> ShowDialog<TResult>(Window dialog, object? dataContext = null)
     {
-        var ownerWindow = this.GetOwnerWindow();
+        var ownerWindow = GetOwnerWindow();
         dialog.DataContext = dataContext;
         return await dialog.ShowDialog<TResult>(ownerWindow);
     }
@@ -25,13 +23,7 @@ public class DialogService
         return this.ShowDialog<object>(new ErrorDialog(), new ErrorDialogViewModel(message));
     }
 
-    public Task ShowAmbiguousSaveDialog(Tag tag, List<Tag> parentTags)
-    {
-        var viewModel = new SaveAmbiguousViewModel(tag, parentTags);   
-        return this.ShowDialog<object>(new SaveAmbiguousDialog(), viewModel);
-    }
-
-    private Window GetOwnerWindow()
+    private static Window GetOwnerWindow()
     {
         if (Application.Current?.ApplicationLifetime is not IClassicDesktopStyleApplicationLifetime desktop)
             throw new InvalidOperationException("Not in a desktop environment.");