diff --git a/lib/routes/changelog.js b/lib/routes/changelog.js
index da75a40e26..1556d0d64b 100644
--- a/lib/routes/changelog.js
+++ b/lib/routes/changelog.js
@@ -39,10 +39,10 @@ module.exports = async (ctx) => {
                     const patt = /[0-9]\d*/g;
                     let result;
                     let date = "";
-                    while ((result = patt.exec(str)) != null) {
+                    while ((result = patt.exec(str)) !== null) {
                         date += result + '-';
                     }
-                    return date.replace(/\-$/g, "");
+                    return date.replace(/-$/g, "");
                 }
 
                 return {