diff --git a/src/Shared/HandyControlDemo_Shared/App.xaml.cs b/src/Shared/HandyControlDemo_Shared/App.xaml.cs
index 7d69a9a4..3cb88ac1 100644
--- a/src/Shared/HandyControlDemo_Shared/App.xaml.cs
+++ b/src/Shared/HandyControlDemo_Shared/App.xaml.cs
@@ -12,7 +12,6 @@
 using HandyControl.Themes;
 using HandyControl.Tools;
 using HandyControl.Tools.Extension;
-using HandyControl.Tools.Helper;
 using HandyControlDemo.Data;
 using HandyControlDemo.Properties.Langs;
 using HandyControlDemo.Tools;
diff --git a/src/Shared/HandyControl_Shared/Tools/Helper/ThemeAnimationHelper.cs b/src/Shared/HandyControl_Shared/HandyControls/Tools/Helper/ThemeAnimationHelper.cs
similarity index 98%
rename from src/Shared/HandyControl_Shared/Tools/Helper/ThemeAnimationHelper.cs
rename to src/Shared/HandyControl_Shared/HandyControls/Tools/Helper/ThemeAnimationHelper.cs
index 90f1dd83..a1aadb4e 100644
--- a/src/Shared/HandyControl_Shared/Tools/Helper/ThemeAnimationHelper.cs
+++ b/src/Shared/HandyControl_Shared/HandyControls/Tools/Helper/ThemeAnimationHelper.cs
@@ -3,7 +3,7 @@
 using System.Windows;
 using System.Windows.Media.Animation;
 
-namespace HandyControl.Tools.Helper;
+namespace HandyControl.Tools;
 public static class ThemeAnimationHelper
 {
     public async static void AnimateTheme(UIElement element, SlideDirection slideDirection, double durationSeconds, double fromOpacity, double toOpacity)