diff --git a/src/modules/launcher/PowerLauncher.UI/LauncherControl.xaml.cs b/src/modules/launcher/PowerLauncher.UI/LauncherControl.xaml.cs
index 31ca2be00a..245ea2c5ff 100644
--- a/src/modules/launcher/PowerLauncher.UI/LauncherControl.xaml.cs
+++ b/src/modules/launcher/PowerLauncher.UI/LauncherControl.xaml.cs
@@ -13,25 +13,14 @@ using Windows.UI.Xaml.Input;
 using Windows.UI.Xaml.Media;
 using Windows.UI.Xaml.Navigation;
 
-// The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
-
 namespace PowerLauncher.UI
 {
     public sealed partial class LauncherControl : UserControl
     {
-        List<SearchApp> SearchResults;
         public LauncherControl()
         {
             this.InitializeComponent();
             ShellBarShadow.Receivers.Add(ShadowReceiverGrid);
         }
     }
-
-
-    public class SearchApp
-    {
-        public string Title { get; set; }
-        public string Icon { get; set; }
-        public string Path { get; set; }
-    }
 }
diff --git a/src/modules/launcher/Wox.Plugin/BaseModel.cs b/src/modules/launcher/Wox.Plugin/BaseModel.cs
index 107fe81e7d..c332529d36 100644
--- a/src/modules/launcher/Wox.Plugin/BaseModel.cs
+++ b/src/modules/launcher/Wox.Plugin/BaseModel.cs
@@ -1,5 +1,7 @@
-using System.ComponentModel;
+using System;
+using System.ComponentModel;
 using System.Runtime.CompilerServices;
+using System.Windows;
 using JetBrains.Annotations;
 
 namespace Wox.Plugin
@@ -11,7 +13,13 @@ namespace Wox.Plugin
         [NotifyPropertyChangedInvocator]
         protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
         {
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));  
+            if (Application.Current.Dispatcher.CheckAccess())
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+            else
+                Application.Current.Dispatcher.BeginInvoke(new Action(() =>
+                {
+                    PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+                }));
         }
     }
 }
\ No newline at end of file