diff --git a/lib/response.js b/lib/response.js
index f965e539dd2..77a3aad98c9 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -759,7 +759,10 @@ res.cookie = function (name, value, options) {
   if (opts.maxAge != null) {
     var maxAge = opts.maxAge - 0
 
-    if (!isNaN(maxAge)) {
+    if (maxAge === Infinity || maxAge === -Infinity || (typeof opts.maxAge === 'number' && isNaN(maxAge))) {
+      // strip non-finite numeric maxAge (Infinity, -Infinity, NaN)
+      delete opts.maxAge
+    } else if (!isNaN(maxAge)) {
       opts.expires = new Date(Date.now() + maxAge)
       opts.maxAge = Math.floor(maxAge / 1000)
     }