diff --git a/Wox.Plugin.SystemPlugins/Program/ProgramSetting.xaml.cs b/Wox.Plugin.SystemPlugins/Program/ProgramSetting.xaml.cs
index 04c9d9c03..11a49707c 100644
--- a/Wox.Plugin.SystemPlugins/Program/ProgramSetting.xaml.cs
+++ b/Wox.Plugin.SystemPlugins/Program/ProgramSetting.xaml.cs
@@ -34,13 +34,15 @@ namespace Wox.Plugin.SystemPlugins.Program
 
         private void btnDeleteProgramSource_OnClick(object sender, RoutedEventArgs e)
         {
-            ProgramSource seletedProgramSource = programSourceView.SelectedItem as ProgramSource;
-            if (seletedProgramSource != null &&
-                MessageBox.Show("Are your sure to delete " + seletedProgramSource.ToString(), "Delete ProgramSource",
-                    MessageBoxButton.YesNo) == MessageBoxResult.Yes)
+            ProgramSource selectedProgramSource = programSourceView.SelectedItem as ProgramSource;
+            if (selectedProgramSource != null)
             {
-                UserSettingStorage.Instance.ProgramSources.Remove(seletedProgramSource);
-                programSourceView.Items.Refresh();
+                if (MessageBox.Show("Are your sure to delete " + selectedProgramSource.ToString(), "Delete ProgramSource",
+                     MessageBoxButton.YesNo) == MessageBoxResult.Yes)
+                {
+                    UserSettingStorage.Instance.ProgramSources.Remove(selectedProgramSource);
+                    programSourceView.Items.Refresh();
+                }
             }
             else
             {
@@ -50,11 +52,11 @@ namespace Wox.Plugin.SystemPlugins.Program
 
         private void btnEditProgramSource_OnClick(object sender, RoutedEventArgs e)
         {
-            ProgramSource seletedProgramSource = programSourceView.SelectedItem as ProgramSource;
-            if (seletedProgramSource != null)
+            ProgramSource selectedProgramSource = programSourceView.SelectedItem as ProgramSource;
+            if (selectedProgramSource != null)
             {
                 ProgramSourceSetting programSource = new ProgramSourceSetting(this);
-                programSource.UpdateItem(seletedProgramSource);
+                programSource.UpdateItem(selectedProgramSource);
                 programSource.ShowDialog();
             }
             else
diff --git a/Wox.Plugin.SystemPlugins/WebSearch/WebSearchesSetting.xaml.cs b/Wox.Plugin.SystemPlugins/WebSearch/WebSearchesSetting.xaml.cs
index 78cf8ac91..219b8b14f 100644
--- a/Wox.Plugin.SystemPlugins/WebSearch/WebSearchesSetting.xaml.cs
+++ b/Wox.Plugin.SystemPlugins/WebSearch/WebSearchesSetting.xaml.cs
@@ -35,13 +35,15 @@ namespace Wox.Plugin.SystemPlugins
 
         private void btnDeleteWebSearch_OnClick(object sender, RoutedEventArgs e)
         {
-            WebSearch seletedWebSearch = webSearchView.SelectedItem as WebSearch;
-            if (seletedWebSearch != null &&
-                MessageBox.Show("Are your sure to delete " + seletedWebSearch.Title, "Delete WebSearch",
-                    MessageBoxButton.YesNo) == MessageBoxResult.Yes)
+            WebSearch selectedWebSearch = webSearchView.SelectedItem as WebSearch;
+            if (selectedWebSearch != null)
             {
-                UserSettingStorage.Instance.WebSearches.Remove(seletedWebSearch);
-                webSearchView.Items.Refresh();
+                if (MessageBox.Show("Are your sure to delete " + selectedWebSearch.Title, "Delete WebSearch",
+                    MessageBoxButton.YesNo) == MessageBoxResult.Yes)
+                {
+                    UserSettingStorage.Instance.WebSearches.Remove(selectedWebSearch);
+                    webSearchView.Items.Refresh();
+                }
             }
             else
             {
@@ -51,11 +53,11 @@ namespace Wox.Plugin.SystemPlugins
 
         private void btnEditWebSearch_OnClick(object sender, RoutedEventArgs e)
         {
-            WebSearch seletedWebSearch = webSearchView.SelectedItem as WebSearch;
-            if (seletedWebSearch != null)
+            WebSearch selectedWebSearch = webSearchView.SelectedItem as WebSearch;
+            if (selectedWebSearch != null)
             {
                 WebSearchSetting webSearch = new WebSearchSetting(this);
-                webSearch.UpdateItem(seletedWebSearch);
+                webSearch.UpdateItem(selectedWebSearch);
                 webSearch.ShowDialog();
             }
             else