diff --git a/apps/web/app/components/library/episode-structure.test.ts b/apps/web/app/components/library/episode-structure.test.ts
index ff814ad3..268cd437 100644
--- a/apps/web/app/components/library/episode-structure.test.ts
+++ b/apps/web/app/components/library/episode-structure.test.ts
@@ -10,7 +10,13 @@ import {
   StructureTrack,
   SubscriptionSeasonPicker,
 } from "./episode-structure.tsx";
-import { hasStructureChoice, inLibraryText, originText, seasonLine, structureOptions } from "./episode-structure-model.ts";
+import {
+  hasStructureChoice,
+  inLibraryText,
+  originText,
+  seasonLine,
+  structureOptions,
+} from "./episode-structure-model.ts";
 
 const ENTITY = "6b1f2c3d-4e5f-4a6b-8c7d-9e0f1a2b3c4d";
 
@@ -159,7 +165,7 @@ describe("季集结构:组件", () => {
       withCache(createElement(SubscriptionSeasonPicker, { entityId: ENTITY, value: "", onChange: () => {} }), empty),
     ).toBe("");
     const html = withCache(
-      createElement(EpisodeStructureSwitcher, { entityId: ENTITY, children: createElement("p", null, "原季列表") }),
+      createElement(EpisodeStructureSwitcher, { entityId: ENTITY }, createElement("p", null, "原季列表")),
       empty,
     );
     expect(html).toBe("<p>原季列表</p>");
@@ -167,7 +173,7 @@ describe("季集结构:组件", () => {
 
   it("作品页:有剧集组时轨道在季列表上方,当前结构显示原来的季与集", () => {
     const html = withCache(
-      createElement(EpisodeStructureSwitcher, { entityId: ENTITY, children: createElement("p", null, "原季列表") }),
+      createElement(EpisodeStructureSwitcher, { entityId: ENTITY }, createElement("p", null, "原季列表")),
       groups("grp-production"),
     );
     expect(html).toContain("季集结构");
diff --git a/apps/web/app/components/library/episode-structure.tsx b/apps/web/app/components/library/episode-structure.tsx
index f27ce556..ef0473cf 100644
--- a/apps/web/app/components/library/episode-structure.tsx
+++ b/apps/web/app/components/library/episode-structure.tsx
@@ -201,7 +201,7 @@ function resultToast(r: EpisodeGroupSetResult) {
  * 作品页「季与集」顶部的季集结构切换:只有 TMDB 有剧集组(或作品已选了剧集组)时出现。
  * 选中当前结构时显示 children(现有的季与集);选中其它结构时显示该结构的季卡片预览与「改用这套结构」。
  */
-export function EpisodeStructureSwitcher({ entityId, children }: { entityId: string; children: ReactNode }) {
+export function EpisodeStructureSwitcher({ entityId, children }: { entityId: string; children?: ReactNode }) {
   const groups = useEpisodeGroups(entityId);
   const options = structureOptions(groups.data);
   const current = groups.data?.current?.groupId ?? null;