diff --git a/lib/index.js b/lib/index.js
index 22bdc53..0d2b482 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -64,7 +64,7 @@
     var maxAge = options.maxAge && options.maxAge.toString();
     if (maxAge && maxAge.length) {
       return {
-        key: 'Access-Control-Allow-Max-Age',
+        key: 'Access-Control-Max-Age',
         value: maxAge
       };
     }
diff --git a/package.json b/package.json
index 3c59c00..fbee53d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "cors"
-  , "version": "2.1.0"
+  , "version": "2.1.1"
   , "author": "Troy Goode <troygoode@gmail.com> (https://github.com/troygoode/)"
   , "description": "middleware for dynamically or statically enabling CORS in express/connect applications"
   , "keywords": ["cors", "express", "connect", "middleware"]
diff --git a/test/cors.js b/test/cors.js
index c69fd4c..77c8256 100644
--- a/test/cors.js
+++ b/test/cors.js
@@ -410,7 +410,7 @@
         res = fakeResponse();
         res.end = function () {
           // assert
-          res.getHeader('Access-Control-Allow-Max-Age').should.equal('456');
+          res.getHeader('Access-Control-Max-Age').should.equal('456');
           done();
         };