diff --git a/src/Modules/EasyOC.Deployment/Views/Items/QueriesDeploymentStep.Summary.cshtml b/src/Modules/EasyOC.Deployment/Views/Items/QueriesDeploymentStep.Summary.cshtml
index 861bf33..a626e36 100644
--- a/src/Modules/EasyOC.Deployment/Views/Items/QueriesDeploymentStep.Summary.cshtml
+++ b/src/Modules/EasyOC.Deployment/Views/Items/QueriesDeploymentStep.Summary.cshtml
@@ -1,4 +1,5 @@
 @using EasyOC.Deployment.Deployment;
+@using EasyOC;
 @using OrchardCore.DisplayManagement.Views;
 @using OrchardCore.Queries;
 @model ShapeViewModel<QueriesDeploymentStep>
diff --git a/src/Modules/EasyOC.Deployment/Views/Items/RolesDeploymentStep.Summary.cshtml b/src/Modules/EasyOC.Deployment/Views/Items/RolesDeploymentStep.Summary.cshtml
index 432ee56..6c53bcb 100644
--- a/src/Modules/EasyOC.Deployment/Views/Items/RolesDeploymentStep.Summary.cshtml
+++ b/src/Modules/EasyOC.Deployment/Views/Items/RolesDeploymentStep.Summary.cshtml
@@ -1,4 +1,5 @@
 @using EasyOC.Deployment.Deployment;
+@using EasyOC;
 @using OrchardCore.DisplayManagement.Views;
 @using OrchardCore.Security.Services;
 @model ShapeViewModel<RolesDeploymentStep>
diff --git a/src/Shared/EasyOC.Shared.Extensions/DictionaryExtensions.cs b/src/Shared/EasyOC.Shared.Extensions/DictionaryExtensions.cs
index 17b5a74..21a1028 100644
--- a/src/Shared/EasyOC.Shared.Extensions/DictionaryExtensions.cs
+++ b/src/Shared/EasyOC.Shared.Extensions/DictionaryExtensions.cs
@@ -1,6 +1,6 @@
 using System.Collections.Concurrent;
 
-namespace System.Collections.Generic
+namespace EasyOC
 {
     public static class DictionaryExtensions
     {
diff --git a/src/Shared/EasyOC.Shared.Extensions/EnumerableExtensions.cs b/src/Shared/EasyOC.Shared.Extensions/EnumerableExtensions.cs
index 6ceec64..6760fd5 100644
--- a/src/Shared/EasyOC.Shared.Extensions/EnumerableExtensions.cs
+++ b/src/Shared/EasyOC.Shared.Extensions/EnumerableExtensions.cs
@@ -1,6 +1,4 @@
-using System.Linq;
-
-namespace System.Collections.Generic
+namespace EasyOC
 {
     public static class EnumerableExtensions
     {
diff --git a/src/Shared/EasyOC.Shared.Extensions/ObjectExtensions.cs b/src/Shared/EasyOC.Shared.Extensions/ObjectExtensions.cs
index 707fc25..4f387e1 100644
--- a/src/Shared/EasyOC.Shared.Extensions/ObjectExtensions.cs
+++ b/src/Shared/EasyOC.Shared.Extensions/ObjectExtensions.cs
@@ -3,7 +3,7 @@
 using System.Globalization;
 using System.Linq;
 using Newtonsoft.Json.Linq;
-namespace System
+namespace EasyOC
 {
     /// <summary>
     /// Extension methods for all objects.
diff --git a/src/Shared/EasyOC.Shared.Extensions/StringExtensions.cs b/src/Shared/EasyOC.Shared.Extensions/StringExtensions.cs
index 41db4cd..29012ed 100644
--- a/src/Shared/EasyOC.Shared.Extensions/StringExtensions.cs
+++ b/src/Shared/EasyOC.Shared.Extensions/StringExtensions.cs
@@ -4,7 +4,7 @@
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace System
+namespace EasyOC
 {
     //
     // 摘要: