diff --git a/src/lang/zh-CN.json b/src/lang/zh-CN.json
index 4e503dd4b..91a23f6d8 100644
--- a/src/lang/zh-CN.json
+++ b/src/lang/zh-CN.json
@@ -73,7 +73,7 @@
     "Delete": "删除",
     "Current": "当前",
     "Uptime": "在线时间",
-    "Cert Exp.": "证书有效期.",
+    "Cert Exp.": "证书有效期",
     "day": "天",
     "-day": "天",
     "hour": "小时",