diff --git a/src/MaaWpfGui/Main/AsstProxy.cs b/src/MaaWpfGui/Main/AsstProxy.cs
index 2c213e2a91..603f26518f 100644
--- a/src/MaaWpfGui/Main/AsstProxy.cs
+++ b/src/MaaWpfGui/Main/AsstProxy.cs
@@ -1438,7 +1438,7 @@ namespace MaaWpfGui.Main
                         string.Join(
                             ", ",
                             (subTaskDetails!["formation"]?.ToObject<List<string?>>() ?? [])
-                                .Select(oper => DataHelper.GetLocalizedCharacterName(oper))
+                                .Select(oper => DataHelper.GetLocalizedCharacterName(oper) ?? oper)
                                 .Where(oper => !string.IsNullOrEmpty(oper))) + "]");
                     break;