diff --git a/lib/timetable/entity/issue.dart b/lib/timetable/entity/issue.dart
index b25b0e253..38fc6a289 100644
--- a/lib/timetable/entity/issue.dart
+++ b/lib/timetable/entity/issue.dart
@@ -32,11 +32,9 @@ class TimetableCbeIssue implements TimetableIssue {
 /// Credit by Examination
 class TimetablePatchOutOfRangeIssue implements TimetableIssue {
   final int patchIndex;
-  final int? inPatchSetIndex;
 
   const TimetablePatchOutOfRangeIssue({
     required this.patchIndex,
-    this.inPatchSetIndex,
   });
 
   static bool detect(SitTimetable timetable, TimetablePatch patch) {
@@ -52,14 +50,9 @@ class TimetablePatchOutOfRangeIssue implements TimetableIssue {
     return false;
   }
 
-  TimetablePatchEntry locate(SitTimetable timetable) {
+  TimetablePatch locate(SitTimetable timetable) {
     final patch = timetable.patches[patchIndex];
-    final inPatchSetIndex = this.inPatchSetIndex;
-    if (inPatchSetIndex != null && patch is TimetablePatchSet) {
-      return patch.patches[inPatchSetIndex];
-    } else {
-      return patch;
-    }
+    return patch as TimetablePatch;
   }
 }
 
@@ -132,16 +125,6 @@ extension SitTimetable4IssueX on SitTimetable {
               patchIndex: i,
             ));
           }
-        } else if (patch is TimetablePatchSet) {
-          for (var j = 0; j < patch.patches.length; j++) {
-            final inner = patch.patches[j];
-            if (TimetablePatchOutOfRangeIssue.detect(this, inner)) {
-              issues.add(TimetablePatchOutOfRangeIssue(
-                patchIndex: i,
-                inPatchSetIndex: j,
-              ));
-            }
-          }
         }
       }
     }
diff --git a/lib/timetable/entity/patch.dart b/lib/timetable/entity/patch.dart
index 0aadfef7b..08b1a5017 100644
--- a/lib/timetable/entity/patch.dart
+++ b/lib/timetable/entity/patch.dart
@@ -49,8 +49,6 @@ sealed class TimetablePatchEntry {
 
   String l10n();
 
-  String get name;
-
   @override
   String toString() => toDartCode();
 
@@ -163,9 +161,6 @@ sealed class TimetablePatch extends TimetablePatchEntry {
   @JsonKey()
   TimetablePatchType get type;
 
-  @override
-  String get name => type.l10n();
-
   const TimetablePatch();
 
   factory TimetablePatch.fromJson(Map<String, dynamic> json) {
@@ -196,7 +191,6 @@ sealed class TimetablePatch extends TimetablePatchEntry {
 @JsonSerializable()
 @CopyWith()
 class TimetablePatchSet extends TimetablePatchEntry {
-  @override
   final String name;
   final List<TimetablePatch> patches;
 
diff --git a/lib/timetable/widgets/issue.dart b/lib/timetable/widgets/issue.dart
index be4c47734..891680bc5 100644
--- a/lib/timetable/widgets/issue.dart
+++ b/lib/timetable/widgets/issue.dart
@@ -204,8 +204,8 @@ class _TimetablePatchOutOfRangeIssueWidgetState extends State<TimetablePatchOutO
         children: widget.issues.map((issue) {
           final patch = issue.locate(timetable);
           return ListTile(
-            leading: Icon(patch is TimetablePatch ? patch.type.icon : Icons.dashboard_customize),
-            title: patch.name.text(),
+            leading: Icon(patch.type.icon),
+            title: patch.type.l10n().text(),
             subtitle: patch.l10n().text(),
             trailing: PlatformTextButton(
               child: i18n.issue.resolve.text(),