diff --git a/README.md b/README.md
index d287cea..4d368a1 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ app.use(async ctx => {
 * **detectJSON**: custom json request detect function. Default is `null`.
 
   ```js
-  app.use(bodyparser({
+  app.use(bodyParser({
     detectJSON: function (ctx) {
       return /\.json$/i.test(ctx.path);
     }
@@ -68,7 +68,7 @@ app.use(async ctx => {
 * **extendTypes**: support extend types:
 
   ```js
-  app.use(bodyparser({
+  app.use(bodyParser({
     extendTypes: {
       json: ['application/x-javascript'] // will parse application/x-javascript type body as a JSON string
     }
@@ -78,7 +78,7 @@ app.use(async ctx => {
 * **onerror**: support custom error handle, if `koa-bodyparser` throw an error, you can customize the response like:
 
   ```js
-  app.use(bodyparser({
+  app.use(bodyParser({
     onerror: function (err, ctx) {
       ctx.throw('body parse error', 422);
     }