diff --git a/README.md b/README.md
index 9a2f0f4..5d8b0dd 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Is *web-component* library missing something ?
 
 No problem! Simply [fork](https://github.com/vardius/web-component/network#fork-destination-box) this repository, [add middleware](https://github.com/vardius/web-component/wiki/Middleware) and create pull request.
 
-## Instaliation
+## Installation
 
 ```bash
 npm install --save web-component
@@ -37,7 +37,8 @@ import { WebComponent } from 'web-component'
   template: require('./hello-world.html'),// provide template
   styles: require('./hello-world.css'), //provide styles
   extends: 'button', //default does not extends any
-  shadowDOM: true //default false
+  shadowDOM: true, //default false
+  mode: "open" // default open, set to closed to block access to shadowDOM
 })
 export class HelloWorld extends HTMLElement {}
 ```
diff --git a/src/connectedCallback/index.js b/src/connectedCallback/index.js
index 5bc0833..fb55110 100644
--- a/src/connectedCallback/index.js
+++ b/src/connectedCallback/index.js
@@ -10,7 +10,7 @@ export default options => original => {
       let shadowRoot = target.shadowRoot;
       if (!shadowRoot) {
         shadowRoot = target.attachShadow({
-          mode: "open"
+          mode: options.mode ? options.mode : "open"
         });
       }
       target = shadowRoot;