diff --git a/src/locale/zh_TW.ts b/src/locale/zh_TW.ts
index 2aef5c28b..6f3145149 100644
--- a/src/locale/zh_TW.ts
+++ b/src/locale/zh_TW.ts
@@ -11,7 +11,7 @@ const locale: Locale = {
   ok: '確定',
   timeSelect: '選擇時間',
   dateSelect: '選擇日期',
-  weekSelect: '選擇周',
+  weekSelect: '選擇週',
   clear: '清除',
   week: '週',
   month: '月',
diff --git a/tests/locale-zh-tw.spec.ts b/tests/locale-zh-tw.spec.ts
new file mode 100644
index 000000000..9dbbd30b9
--- /dev/null
+++ b/tests/locale-zh-tw.spec.ts
@@ -0,0 +1,8 @@
+import zhTW from '../src/locale/zh_TW';
+
+describe('zh_TW locale', () => {
+  it('uses the Taiwan week term consistently', () => {
+    expect(zhTW.weekSelect).toBe('選擇週');
+    expect(zhTW.weekSelect).toContain('週');
+  });
+});