diff --git a/frontend/src/core/i18n/locales/en-US.ts b/frontend/src/core/i18n/locales/en-US.ts
index d60e817..1bc60a9 100644
--- a/frontend/src/core/i18n/locales/en-US.ts
+++ b/frontend/src/core/i18n/locales/en-US.ts
@@ -243,7 +243,7 @@ export const enUS: Translations = {
         longTermBackground: "Long-term background",
         updatedAt: "Updated at",
         facts: "Facts",
-        empty: "empty",
+        empty: "(empty)",
         table: {
           category: "Category",
           confidence: "Confidence",
diff --git a/frontend/src/core/i18n/locales/zh-CN.ts b/frontend/src/core/i18n/locales/zh-CN.ts
index b3b2e1b..a3d399b 100644
--- a/frontend/src/core/i18n/locales/zh-CN.ts
+++ b/frontend/src/core/i18n/locales/zh-CN.ts
@@ -238,7 +238,7 @@ export const zhCN: Translations = {
         longTermBackground: "长期背景",
         updatedAt: "更新于",
         facts: "事实",
-        empty: "空",
+        empty: "（空）",
         table: {
           category: "类别",
           confidence: "置信度",