diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index 228f94e..03fbf79 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -1,4 +1,5 @@
 {
+    "@@locale": "en",
     "mainPage": "Main",
     "aboutPage": "About",
     "logPage": "Log",
diff --git a/lib/l10n/app_zh.arb b/lib/l10n/app_zh.arb
index 1af8cb3..984f396 100644
--- a/lib/l10n/app_zh.arb
+++ b/lib/l10n/app_zh.arb
@@ -1,4 +1,5 @@
 {
+    "@@locale": "zh",
     "mainPage": "主页",
     "aboutPage": "关于",
     "logPage": "日志",