diff --git a/src/MaaWpfGui/ViewModels/TaskSettingsViewModel.cs b/src/MaaWpfGui/ViewModels/TaskSettingsViewModel.cs
index 0699fc0ccf..453f46cc8a 100644
--- a/src/MaaWpfGui/ViewModels/TaskSettingsViewModel.cs
+++ b/src/MaaWpfGui/ViewModels/TaskSettingsViewModel.cs
@@ -17,10 +17,8 @@ using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using MaaWpfGui.Configuration.Factory;
 using MaaWpfGui.Configuration.Single.MaaTask;
-using MaaWpfGui.Main;
 using MaaWpfGui.Models;
 using MaaWpfGui.Utilities;
-using Newtonsoft.Json.Linq;
 using Stylet;
 
 namespace MaaWpfGui.ViewModels;
@@ -35,7 +33,7 @@ public abstract class TaskSettingsViewModel : PropertyChangedBase
     protected bool IsRefreshingUI { get; set; } = false; // 需手动赋值
 
     protected T GetTaskConfig<T>()
-        where T : BaseTask, new()
+        where T : notnull, BaseTask, new()
     {
         return TaskSettingVisibilityInfo.Instance.CurrentIndex >= 0 &&
             ConfigFactory.CurrentConfig.TaskQueue.Count > TaskSettingVisibilityInfo.Instance.CurrentIndex &&