diff --git a/public/translate/cn/translate.js b/public/translate/cn/translate.js
index 00064e4619..1e6aef4720 100644
--- a/public/translate/cn/translate.js
+++ b/public/translate/cn/translate.js
@@ -109,7 +109,7 @@ var sourceVisible = localStorage.getItem('source-visible') === 'true';
   function isPureEnglish(text) {
     // accept — , quotes, ® and façade too.
     text = text.replace('在线例子', '');
-    return /^[\1-\255—’“”ç®…à]*$/.test(text);
+    return /^[\1-\255—’“”ç®…à\u200B]*$/.test(text);
   }
 
   function attributesToString(node) {