diff --git a/app.js b/app.js
index 02fe7c23762da820b7db1867850f7dec16a84dfe..d78e9781a3708c1d6679935becbd01b0fc7b6f8f 100644
--- a/app.js
+++ b/app.js
@@ -38,15 +38,14 @@ app.use((req, res, next) => {
 
 // cookie parser
 app.use((req, res, next) => {
-  req.cookies = {}(req.headers.cookie || '')
-    .split(/\s*;\s*/)
-    .forEach((pair) => {
-      let crack = pair.indexOf('=')
-      if (crack < 1 || crack == pair.length - 1) return
-      req.cookies[
-        decodeURIComponent(pair.slice(0, crack)).trim()
-      ] = decodeURIComponent(pair.slice(crack + 1)).trim()
-    })
+  req.cookies = {}
+  ;(req.headers.cookie || '').split(/\s*;\s*/).forEach((pair) => {
+    let crack = pair.indexOf('=')
+    if (crack < 1 || crack == pair.length - 1) return
+    req.cookies[
+      decodeURIComponent(pair.slice(0, crack)).trim()
+    ] = decodeURIComponent(pair.slice(crack + 1)).trim()
+  })
   next()
 })