diff --git a/Plugins/Wox.Plugin.Program/ProgramSuffixes.xaml.cs b/Plugins/Wox.Plugin.Program/ProgramSuffixes.xaml.cs
index 6f52bacd0d..ef5783b469 100644
--- a/Plugins/Wox.Plugin.Program/ProgramSuffixes.xaml.cs
+++ b/Plugins/Wox.Plugin.Program/ProgramSuffixes.xaml.cs
@@ -30,6 +30,8 @@ namespace Wox.Plugin.Program
             _settings.ProgramSuffixes = tbSuffixes.Text.Split(Settings.SuffixSeperator);
             string msg = context.API.GetTranslation("wox_plugin_program_update_file_suffixes");
             MessageBox.Show(msg);
+
+            DialogResult = true;
         }
     }
 }
diff --git a/Plugins/Wox.Plugin.Program/Views/ProgramSetting.xaml.cs b/Plugins/Wox.Plugin.Program/Views/ProgramSetting.xaml.cs
index b610a6dc60..72a4f57466 100644
--- a/Plugins/Wox.Plugin.Program/Views/ProgramSetting.xaml.cs
+++ b/Plugins/Wox.Plugin.Program/Views/ProgramSetting.xaml.cs
@@ -102,8 +102,11 @@ namespace Wox.Plugin.Program.Views
 
         private void BtnProgramSuffixes_OnClick(object sender, RoutedEventArgs e)
         {
-            ProgramSuffixes p = new ProgramSuffixes(context, _settings);
-            p.ShowDialog();
+            var p = new ProgramSuffixes(context, _settings);
+            if (p.ShowDialog() ?? false)
+            {
+                ReIndexing();
+            }
         }
 
         private void programSourceView_DragEnter(object sender, DragEventArgs e)