diff --git a/Flow.Launcher/App.xaml.cs b/Flow.Launcher/App.xaml.cs
index 765a1a559..d74ea62fb 100644
--- a/Flow.Launcher/App.xaml.cs
+++ b/Flow.Launcher/App.xaml.cs
@@ -30,7 +30,7 @@ namespace Flow.Launcher
         private SettingWindowViewModel _settingsVM;
         private readonly Updater _updater = new Updater(Flow.Launcher.Properties.Settings.Default.GithubRepo);
         private readonly Portable _portable = new Portable();
-        private readonly PinyinAlphabet _alphabet = new PinyinAlphabet();
+        private readonly DoublePinAlphabet _alphabet = new DoublePinAlphabet();
         private StringMatcher _stringMatcher;
 
         [STAThread]
diff --git a/Flow.Launcher/PublicAPIInstance.cs b/Flow.Launcher/PublicAPIInstance.cs
index b49bf39d3..952ce0edb 100644
--- a/Flow.Launcher/PublicAPIInstance.cs
+++ b/Flow.Launcher/PublicAPIInstance.cs
@@ -32,11 +32,11 @@ namespace Flow.Launcher
     {
         private readonly SettingWindowViewModel _settingsVM;
         private readonly MainViewModel _mainVM;
-        private readonly PinyinAlphabet _alphabet;
+        private readonly DoublePinAlphabet _alphabet;
 
         #region Constructor
 
-        public PublicAPIInstance(SettingWindowViewModel settingsVM, MainViewModel mainVM, PinyinAlphabet alphabet)
+        public PublicAPIInstance(SettingWindowViewModel settingsVM, MainViewModel mainVM, DoublePinAlphabet alphabet)
         {
             _settingsVM = settingsVM;
             _mainVM = mainVM;