diff --git a/lib/index.js b/lib/index.js
index 38b5a3e..cde43c2 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -100,7 +100,7 @@ module.exports.createFromSession = function (session) {
   }
 }
 
-module.exports.koa_middlewhere = function (tid, options) {
+module.exports.koaMiddlewhere = function (tid, options) {
 
   this.tid = tid;
   this.options = options;
diff --git a/package-lock.json b/package-lock.json
index 3bf1fa2..ace6ff6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "universal-analytics",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {