diff --git a/samples/DashboardDemo/src/DashboardDemo.Application/UserStatisticAppService.cs b/samples/DashboardDemo/src/DashboardDemo.Application/DemoStatisticAppService.cs
similarity index 85%
rename from samples/DashboardDemo/src/DashboardDemo.Application/UserStatisticAppService.cs
rename to samples/DashboardDemo/src/DashboardDemo.Application/DemoStatisticAppService.cs
index 0f16ea4acd..9651c7cbdb 100644
--- a/samples/DashboardDemo/src/DashboardDemo.Application/UserStatisticAppService.cs
+++ b/samples/DashboardDemo/src/DashboardDemo.Application/DemoStatisticAppService.cs
@@ -7,7 +7,7 @@ using Volo.Abp.Application.Services;
 
 namespace DashboardDemo
 {
-    public class UserStatisticAppService : ApplicationService, IUserStatisticAppService
+    public class DemoStatisticAppService : ApplicationService, IDemoStatisticAppService
     {
         public async Task<NewUserPerDayStatisticDto> GetNewUserPerDayStatistic()
         {
diff --git a/samples/DashboardDemo/src/DashboardDemo.Application/IUserStatisticAppService.cs b/samples/DashboardDemo/src/DashboardDemo.Application/IDemoStatisticAppService.cs
similarity index 79%
rename from samples/DashboardDemo/src/DashboardDemo.Application/IUserStatisticAppService.cs
rename to samples/DashboardDemo/src/DashboardDemo.Application/IDemoStatisticAppService.cs
index adbfdc403b..6f7efc064f 100644
--- a/samples/DashboardDemo/src/DashboardDemo.Application/IUserStatisticAppService.cs
+++ b/samples/DashboardDemo/src/DashboardDemo.Application/IDemoStatisticAppService.cs
@@ -6,7 +6,7 @@ using Volo.Abp.Application.Services;
 
 namespace DashboardDemo
 {
-    public interface IUserStatisticAppService : IApplicationService
+    public interface IDemoStatisticAppService : IApplicationService
     {
         Task<NewUserPerDayStatisticDto> GetNewUserPerDayStatistic();
     }
diff --git a/samples/DashboardDemo/src/DashboardDemo.Web/Pages/widgets/UserCountWidget/UserCountWidget.js b/samples/DashboardDemo/src/DashboardDemo.Web/Pages/widgets/UserCountWidget/UserCountWidget.js
index f55a8ec891..9d4ca3ccea 100644
--- a/samples/DashboardDemo/src/DashboardDemo.Web/Pages/widgets/UserCountWidget/UserCountWidget.js
+++ b/samples/DashboardDemo/src/DashboardDemo.Web/Pages/widgets/UserCountWidget/UserCountWidget.js
@@ -6,7 +6,7 @@
 
 
         var createChart = function () {
-            dashboardDemo.userStatistic.getNewUserPerDayStatistic().then(function (result) {
+            dashboardDemo.demoStatistic.getNewUserPerDayStatistic().then(function (result) {
 
                 var chart = new Chart($container.find('#UserStatistics'), {
                     type: 'bar',