diff --git a/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs b/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs
index b093413..6b8d953 100644
--- a/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs
+++ b/demo/Ursa.Demo/ViewModels/MainViewViewModel.cs
@@ -4,7 +4,7 @@ using Avalonia;
 using Avalonia.Styling;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Messaging;
-using Semi.Avalonia;
+using Ursa.Themes.Semi;
 
 namespace Ursa.Demo.ViewModels;
 
@@ -90,7 +90,7 @@ public partial class MainViewViewModel : ViewModelBase
         new("Dark", ThemeVariant.Dark),
         new("Aquatic", SemiTheme.Aquatic),
         new("Desert", SemiTheme.Desert),
-        new("Dust", SemiTheme.Dust),
+        new("Dusk", SemiTheme.Dusk),
         new("NightSky", SemiTheme.NightSky)
     ];
 
diff --git a/src/Ursa.Themes.Semi/Index.axaml b/src/Ursa.Themes.Semi/Index.axaml
index 5db88d3..3942f71 100644
--- a/src/Ursa.Themes.Semi/Index.axaml
+++ b/src/Ursa.Themes.Semi/Index.axaml
@@ -7,7 +7,7 @@
                 <ResourceInclude x:Key="Light" Source="./Themes/Light/_index.axaml" />
                 <ResourceInclude x:Key="{x:Static semi:SemiTheme.Aquatic}" Source="./Themes/HighContrast/Aquatic.axaml" />
                 <ResourceInclude x:Key="{x:Static semi:SemiTheme.Desert}" Source="./Themes/HighContrast/Desert.axaml" />
-                <ResourceInclude x:Key="{x:Static semi:SemiTheme.Dust}" Source="./Themes/HighContrast/Dusk.axaml" />
+                <ResourceInclude x:Key="{x:Static semi:SemiTheme.Dusk}" Source="./Themes/HighContrast/Dusk.axaml" />
                 <ResourceInclude x:Key="{x:Static semi:SemiTheme.NightSky}" Source="./Themes/HighContrast/NightSky.axaml" />
             </ResourceDictionary.ThemeDictionaries>
             <ResourceDictionary.MergedDictionaries>
diff --git a/src/Ursa.Themes.Semi/Index.axaml.cs b/src/Ursa.Themes.Semi/Index.axaml.cs
index 6a61fe7..2112116 100644
--- a/src/Ursa.Themes.Semi/Index.axaml.cs
+++ b/src/Ursa.Themes.Semi/Index.axaml.cs
@@ -13,7 +13,7 @@ public class SemiTheme: Styles
 {
     public static ThemeVariant Aquatic => new ThemeVariant(nameof(Aquatic), ThemeVariant.Dark);
     public static ThemeVariant Desert => new ThemeVariant(nameof(Desert), ThemeVariant.Light);
-    public static ThemeVariant Dust => new ThemeVariant(nameof(Dust), ThemeVariant.Dark);
+    public static ThemeVariant Dusk => new ThemeVariant(nameof(Dusk), ThemeVariant.Dark);
     public static ThemeVariant NightSky => new ThemeVariant(nameof(NightSky), ThemeVariant.Dark);
     
     private static readonly Lazy<Dictionary<CultureInfo, ResourceDictionary>> _localeToResource = new Lazy<Dictionary<CultureInfo, ResourceDictionary>>(