diff --git a/src/platform/i18n.tsx b/src/platform/i18n.tsx
index ccc71e6..72e791e 100644
--- a/src/platform/i18n.tsx
+++ b/src/platform/i18n.tsx
@@ -58,7 +58,7 @@ export function autoMatchRegion() {
         }
       }
     } else if (s.length === 2) {
-      const [lang, region] = s[1];
+      const [lang, region] = s;
       for (const available of SUPPORTED_REGIONS) {
         if (available.toLowerCase() === `${lang}_${region}`.toLowerCase()) {
           return available;