diff --git a/Plugins/Flow.Launcher.Plugin.Explorer/ViewModels/SettingsViewModel.cs b/Plugins/Flow.Launcher.Plugin.Explorer/ViewModels/SettingsViewModel.cs
index 7d96587f8..d7e588f1f 100644
--- a/Plugins/Flow.Launcher.Plugin.Explorer/ViewModels/SettingsViewModel.cs
+++ b/Plugins/Flow.Launcher.Plugin.Explorer/ViewModels/SettingsViewModel.cs
@@ -1,5 +1,4 @@
-using Flow.Launcher.Core.Plugin;
-using Flow.Launcher.Infrastructure.Storage;
+#nullable enable
 using Flow.Launcher.Plugin.Explorer.Search;
 using Flow.Launcher.Plugin.Explorer.Search.Everything;
 using Flow.Launcher.Plugin.Explorer.Search.Everything.Exceptions;
@@ -11,7 +10,6 @@ using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
-using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Forms;
 using System.Windows.Input;
@@ -90,9 +88,9 @@ namespace Flow.Launcher.Plugin.Explorer.ViewModels
             ContentIndexSearchEngines = EnumBindingModel<Settings.ContentIndexSearchEngineOption>.CreateList();
             PathEnumerationEngines = EnumBindingModel<Settings.PathEnumerationEngineOption>.CreateList();
 
-            SelectedIndexSearchEngine = IndexSearchEngines.FirstOrDefault(x => x.Value == Settings.IndexSearchEngine);
-            _selectedContentSearchEngine = ContentIndexSearchEngines.FirstOrDefault(x => x.Value == Settings.ContentSearchEngine);
-            _selectedPathEnumerationEngine = PathEnumerationEngines.FirstOrDefault(x => x.Value == Settings.PathEnumerationEngine);
+            SelectedIndexSearchEngine = IndexSearchEngines.First(x => x.Value == Settings.IndexSearchEngine);
+            SelectedContentSearchEngine = ContentIndexSearchEngines.First(x => x.Value == Settings.ContentSearchEngine);
+            SelectedPathEnumerationEngine = PathEnumerationEngines.First(x => x.Value == Settings.PathEnumerationEngine);
         }
 
         #endregion
@@ -120,13 +118,13 @@ namespace Flow.Launcher.Plugin.Explorer.ViewModels
 
         public IReadOnlyList<ActionKeywordModel> ActionKeywordsModels { get; set; }
 
-        public ActionKeywordModel SelectedActionKeyword { get; set; }
+        public ActionKeywordModel? SelectedActionKeyword { get; set; }
 
         public ICommand EditActionKeywordCommand => new RelayCommand(EditActionKeyword);
 
         private void EditActionKeyword(object obj)
         {
-            if (SelectedActionKeyword is not ActionKeywordModel actionKeyword)
+            if (SelectedActionKeyword is not { } actionKeyword)
             {
                 ShowUnselectedMessage();
                 return;
@@ -150,7 +148,7 @@ namespace Flow.Launcher.Plugin.Explorer.ViewModels
                     Context.API.AddActionKeyword(Context.CurrentPluginMetadata.ID, actionKeywordWindow.ActionKeyword);
                     break;
                 case (false, true):
-                    Context.API.AddActionKeyword(Context.CurrentPluginMetadata.ID, actionKeyword.Keyword);
+                    Context.API.AddActionKeyword(Context.CurrentPluginMetadata.ID, actionKeywordWindow.ActionKeyword);
                     break;
                 case (false, false):
                     throw new ArgumentException(
@@ -165,8 +163,8 @@ namespace Flow.Launcher.Plugin.Explorer.ViewModels
 
         #region AccessLinks
 
-        public AccessLink SelectedQuickAccessLink { get; set; }
-        public AccessLink SelectedIndexSearchExcludedPath { get; set; }
+        public AccessLink? SelectedQuickAccessLink { get; set; }
+        public AccessLink? SelectedIndexSearchExcludedPath { get; set; }
 
 
 
@@ -187,7 +185,7 @@ namespace Flow.Launcher.Plugin.Explorer.ViewModels
 
         private void EditLink(object commandParameter)
         {
-            (AccessLink selectedLink, ObservableCollection<AccessLink> collection) = commandParameter switch
+            var (selectedLink, collection) = commandParameter switch
             {
                 "QuickAccessLink" => (SelectedQuickAccessLink, Settings.QuickAccessLinks),
                 "IndexSearchExcludedPaths" => (SelectedIndexSearchExcludedPath, Settings.IndexSearchExcludedSubdirectoryPaths),
@@ -266,9 +264,9 @@ namespace Flow.Launcher.Plugin.Explorer.ViewModels
 
         #endregion
 
-        private string? PromptUserSelectPath(ResultType type, string initialDirectory = null)
+        private string? PromptUserSelectPath(ResultType type, string? initialDirectory = null)
         {
-            string path = null;
+            string? path = null;
 
             if (type is ResultType.Folder)
             {
diff --git a/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml b/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml
index 677ba5342..d42505348 100644
--- a/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml
+++ b/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml
@@ -77,8 +77,6 @@
                         Text="{DynamicResource plugin_explorer_actionkeyword_current}" />
                     <TextBox
                         Name="TxtCurrentActionKeyword"
-                        Grid.Row="0"
-                        Grid.Column="1"
                         Width="135"
                         HorizontalAlignment="Left"
                         VerticalAlignment="Center"
@@ -97,7 +95,7 @@
                         Name="ChkActionKeywordEnabled"
                         Width="auto"
                         VerticalAlignment="Center"
-                        IsChecked="{Binding KeywordEnabled}"
+                        IsChecked="{Binding KeywordEnabled, Mode=TwoWay}"
                         ToolTip="{DynamicResource plugin_explorer_actionkeyword_enabled_tooltip}" />
                 </StackPanel>
             </StackPanel>
diff --git a/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml.cs b/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml.cs
index 918adb527..6ee4faad8 100644
--- a/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml.cs
+++ b/Plugins/Flow.Launcher.Plugin.Explorer/Views/ActionKeywordSetting.xaml.cs
@@ -2,7 +2,9 @@ using Flow.Launcher.Plugin.Explorer.ViewModels;
 using ICSharpCode.SharpZipLib.Zip;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using System.Windows;
 using System.Windows.Input;
 
@@ -11,9 +13,9 @@ namespace Flow.Launcher.Plugin.Explorer.Views
     /// <summary>
     /// Interaction logic for ActionKeywordSetting.xaml
     /// </summary>
-    public partial class ActionKeywordSetting : Window
+    public partial class ActionKeywordSetting : INotifyPropertyChanged
     {
-        public ActionKeywordModel CurrentActionKeyword { get; set; }
+        private ActionKeywordModel CurrentActionKeyword { get; }
 
         public string ActionKeyword
         {
@@ -22,14 +24,19 @@ namespace Flow.Launcher.Plugin.Explorer.Views
             {
                 // Set Enable to be true if user change ActionKeyword
                 KeywordEnabled = true;
-                actionKeyword = value;
+                _ = SetField(ref actionKeyword, value);
             }
         }
 
-        public bool KeywordEnabled { get; set; }
+        public bool KeywordEnabled
+        {
+            get => _keywordEnabled;
+            set => SetField(ref _keywordEnabled, value);
+        }
 
         private string actionKeyword;
         private readonly IPublicAPI api;
+        private bool _keywordEnabled;
 
         public ActionKeywordSetting(ActionKeywordModel selectedActionKeyword, IPublicAPI api)
         {
@@ -55,18 +62,13 @@ namespace Flow.Launcher.Plugin.Explorer.Views
                 return;
             }
 
-            if (ActionKeyword == "")
-            {
-                ActionKeyword = "*";
-            }
-
             if (ActionKeyword == Query.GlobalPluginWildcardSign)
-                switch (CurrentActionKeyword.KeywordProperty)
+                switch (CurrentActionKeyword.KeywordProperty, KeywordEnabled)
                 {
-                    case Settings.ActionKeyword.FileContentSearchActionKeyword:
+                    case (Settings.ActionKeyword.FileContentSearchActionKeyword, true):
                         MessageBox.Show(api.GetTranslation("plugin_explorer_globalActionKeywordInvalid"));
                         return;
-                    case Settings.ActionKeyword.QuickAccessActionKeyword:
+                    case (Settings.ActionKeyword.QuickAccessActionKeyword, true):
                         MessageBox.Show(api.GetTranslation("plugin_explorer_quickaccess_globalActionKeywordInvalid"));
                         return;
                 }
@@ -96,5 +98,18 @@ namespace Flow.Launcher.Plugin.Explorer.Views
                 e.Handled = true;
             }
         }
+        public event PropertyChangedEventHandler PropertyChanged;
+        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+        private bool SetField<T>(ref T field, T value, [CallerMemberName] string propertyName = null)
+        {
+            if (EqualityComparer<T>.Default.Equals(field, value))
+                return false;
+            field = value;
+            OnPropertyChanged(propertyName);
+            return true;
+        }
     }
-}
\ No newline at end of file
+}