diff --git a/README.md b/README.md
index 037d11c..89257b4 100644
--- a/README.md
+++ b/README.md
@@ -5,12 +5,20 @@
   
 
 Using npm:
+
 ```bash
     $ npm i -s kkiapay/nodejs-sdk
 ```
 
 ## Initialization
 
+you need to import the package before using it in your controllers.
+
+```js
+// import kkiapay package
+const kkiapay = require('kkiapay-nodejs-sdk');
+```
+
 #### Production
 ```js
 // setup your api key (https://www.kkiapay.me)