diff --git a/DeedyDesigner/Deedy.Activity/ActionViewer.cs b/DeedyDesigner/Deedy.Activity/ActionViewer.cs
index e37a7b5..f86d7b1 100644
--- a/DeedyDesigner/Deedy.Activity/ActionViewer.cs
+++ b/DeedyDesigner/Deedy.Activity/ActionViewer.cs
@@ -17,7 +17,7 @@ using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
-using Deedy.Activity.Helpers;
+using Deedy.Activity;
 
 namespace Deedy.Activity
 {
diff --git a/DeedyDesigner/Deedy.Activity/Adorner/DragPlacementAdorner.cs b/DeedyDesigner/Deedy.Activity/Adorner/DragPlacementAdorner.cs
index 0b2ff36..f187f2d 100644
--- a/DeedyDesigner/Deedy.Activity/Adorner/DragPlacementAdorner.cs
+++ b/DeedyDesigner/Deedy.Activity/Adorner/DragPlacementAdorner.cs
@@ -7,7 +7,7 @@ using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Media;
-using Deedy.Activity.Helpers;
+using Deedy.Activity;
 
 namespace Deedy.Activity
 {
diff --git a/DeedyDesigner/Deedy.Activity/Helpers/VisualHelper.cs b/DeedyDesigner/Deedy.Activity/Helpers/VisualHelper.cs
index 7e114a1..0096dfa 100644
--- a/DeedyDesigner/Deedy.Activity/Helpers/VisualHelper.cs
+++ b/DeedyDesigner/Deedy.Activity/Helpers/VisualHelper.cs
@@ -10,7 +10,7 @@ using System.Windows.Controls;
 using Drawing = System.Drawing;
 using System.Windows.Documents;
 
-namespace Deedy.Activity.Helpers
+namespace Deedy.Activity
 {
     /// <summary>
     /// 辅助可视化单元进行相关操作