diff --git a/src/cli/ui/Wizard.tsx b/src/cli/ui/Wizard.tsx
index 9706f8b..4d07f2e 100644
--- a/src/cli/ui/Wizard.tsx
+++ b/src/cli/ui/Wizard.tsx
@@ -401,7 +401,7 @@ function LanguageStep({
   const items: SelectItem<LanguageCode>[] = getSupportedLanguages().map((code) => ({
     value: code,
     label: LANGUAGE_LABELS[code],
-    hint: code === detectSystemLanguage() ? "(detected)" : undefined,
+    hint: code === detectSystemLanguage() ? t("wizard.languageDetectedHint") : undefined,
   }));
   return (
     <Box flexDirection="column" borderStyle="round" borderColor="cyan" paddingX={1}>
diff --git a/src/i18n/EN.ts b/src/i18n/EN.ts
index 0ac9539..4c11811 100644
--- a/src/i18n/EN.ts
+++ b/src/i18n/EN.ts
@@ -426,6 +426,7 @@ export const EN: TranslationSchema = {
   wizard: {
     languageTitle: "Choose your language",
     languageSubtitle: "Detected from your system locale. Switch later via /language.",
+    languageDetectedHint: "(detected)",
     welcomeTitle: "Welcome to Carbon Code.",
     apiKeyPrompt: "Paste your DeepSeek API key to get started.",
     apiKeyGetOne: "Get one at: https://platform.deepseek.com/api_keys",
diff --git a/src/i18n/types.ts b/src/i18n/types.ts
index 8282c0a..82888bc 100644
--- a/src/i18n/types.ts
+++ b/src/i18n/types.ts
@@ -280,6 +280,7 @@ export interface TranslationSchema {
   wizard: {
     languageTitle: string;
     languageSubtitle: string;
+    languageDetectedHint: string;
     welcomeTitle: string;
     apiKeyPrompt: string;
     apiKeyGetOne: string;
diff --git a/src/i18n/zh-CN.ts b/src/i18n/zh-CN.ts
index 7afc2e3..d09fb31 100644
--- a/src/i18n/zh-CN.ts
+++ b/src/i18n/zh-CN.ts
@@ -415,6 +415,7 @@ export const zhCN: TranslationSchema = {
   wizard: {
     languageTitle: "选择语言",
     languageSubtitle: "已根据系统语言自动选中。之后可用 /language 切换。",
+    languageDetectedHint: "（已检测）",
     welcomeTitle: "欢迎使用 Carbon Code。",
     apiKeyPrompt: "粘贴你的 DeepSeek API key 开始使用。",
     apiKeyGetOne: "在此获取：https://platform.deepseek.com/api_keys",
diff --git a/tests/wizard.test.tsx b/tests/wizard.test.tsx
index 552e2b4..c974bf7 100644
--- a/tests/wizard.test.tsx
+++ b/tests/wizard.test.tsx
@@ -62,6 +62,8 @@ describe("Wizard — first-launch language picker", () => {
     expect(out).toContain("选择语言");
     expect(out).toContain("English");
     expect(out).toContain("简体中文");
+    expect(out).toContain("（已检测）");
+    expect(out).not.toContain("(detected)");
     unmount();
   });
 });