diff --git a/README.md b/README.md
index b405845..0b21934 100644
--- a/README.md
+++ b/README.md
@@ -32,8 +32,10 @@ npm i asyncrify
 ```sh
 import Queue from 'asyncrify'
 const queue = new Queue()
-queue.add(() => new Promise((resolve) => setTimeout(resolve, 200)), (res, err) => {
-  //handle err or result
+queue.add(() => new Promise((resolve) => setTimeout(resolve, 200)), (res) => {
+  //handle result
+}, (err) => {
+  //handle err
 })
 ```