diff --git a/internal/check-optional-t-equivalence.mjs b/internal/check-optional-t-equivalence.mjs
index 6edb2e5e1..97df870b6 100644
--- a/internal/check-optional-t-equivalence.mjs
+++ b/internal/check-optional-t-equivalence.mjs
@@ -114,7 +114,8 @@ ok(!/locales\/en\//.test(codeOnly(src)), 'CONTROL: and it imports NO per-area En
 import { readFileSync as rf, readdirSync } from 'node:fs'
 const SITES = [
   // file, helper it must use, a fragment of the fallback it must still pass
-  ['library/components/legends/ApproxPinNote.vue',      'useOptionalT',     'APPROX_FALLBACK[key]'],
+  // On the {t, te, locale} form since formatList: the names list must follow its sentence's locale.
+  ['library/components/legends/ApproxPinNote.vue',      'useOptionalI18n',  'APPROX_FALLBACK[key]'],
   ['library/components/search/FilterDropdown.vue',      'useOptionalT',     'FALLBACK[key]'],
   ['library/components/legends/SemanticTreeLegend.vue', 'useOptionalI18n',  'humanizeKey(k)'],
   ['library/components/poster/PosterWall.vue',          'useOptionalI18n',  'humanizeKey(k)'],