diff --git a/src/AxCopilot/Views/SettingsWindow.xaml b/src/AxCopilot/Views/SettingsWindow.xaml
index d2ed869..df0b0bc 100644
--- a/src/AxCopilot/Views/SettingsWindow.xaml
+++ b/src/AxCopilot/Views/SettingsWindow.xaml
@@ -2871,8 +2871,7 @@
                                 <!-- 타입 드롭다운 -->
                                 <ComboBox Grid.Row="0" Grid.Column="4"
                                           SelectedValue="{Binding NewHotkeyType}"
-                                          SelectedValuePath="Tag"
-                                          Style="{StaticResource ModernComboBox}">
+                                          SelectedValuePath="Tag">
                                     <ComboBoxItem Tag="app">앱 (exe)</ComboBoxItem>
                                     <ComboBoxItem Tag="folder">폴더</ComboBoxItem>
                                     <ComboBoxItem Tag="url">URL</ComboBoxItem>
diff --git a/src/AxCopilot/Views/SettingsWindow.xaml.cs b/src/AxCopilot/Views/SettingsWindow.xaml.cs
index ff080a6..eaec587 100644
--- a/src/AxCopilot/Views/SettingsWindow.xaml.cs
+++ b/src/AxCopilot/Views/SettingsWindow.xaml.cs
@@ -457,7 +457,7 @@ public partial class SettingsWindow : Window
 
     protected override void OnClosed(EventArgs e)
     {
-        if (!_saved) _revertCallback();
+        if (!_saved) _revertCallback?.Invoke();
         base.OnClosed(e);
     }
 }