diff --git a/dist/polyfill.js b/dist/polyfill.js
index dc9e0b62..441e06d0 100644
--- a/dist/polyfill.js
+++ b/dist/polyfill.js
@@ -1,9 +1,4 @@
-/*!
-  * Native JavaScript for Bootstrap Polyfill v3.0.5 (https://thednp.github.io/bootstrap.native/)
-  * Copyright 2015-2020 © dnp_theme
-  * Licensed under MIT (https://github.com/thednp/bootstrap.native/blob/master/LICENSE)
-  */
- "use strict";
+"use strict";
 if (!Array.from) {
   Array.from = (function () {
     var toStr = Object.prototype.toString;
diff --git a/dist/polyfill.min.js b/dist/polyfill.min.js
index ebd0c993..8be1c169 100644
--- a/dist/polyfill.min.js
+++ b/dist/polyfill.min.js
@@ -1,3 +1,2 @@
-// Native JavaScript for Bootstrap Polyfill v3.0.5 | 2020 © dnp_theme | MIT-License
 "use strict";
 var t,e,n,o;Array.from||(Array.from=(t=Object.prototype.toString,e=function(e){return"function"==typeof e||"[object Function]"===t.call(e)},n=Math.pow(2,53)-1,o=function(t){var e=function(t){var e=Number(t);return isNaN(e)?0:0!==e&&isFinite(e)?(e>0?1:-1)*Math.floor(Math.abs(e)):e}(t);return Math.min(Math.max(e,0),n)},function(t){var n=this,r=Object(t);if(null==t)throw new TypeError("Array.from requires an array-like object - not null or undefined");var i,a=arguments.length>1?arguments[1]:void 0;if(void 0!==a){if(!e(a))throw new TypeError("Array.from: when provided, the second argument must be a function");arguments.length>2&&(i=arguments[2])}for(var c,l=o(r.length),p=e(n)?Object(new n(l)):new Array(l),u=0;u<l;)c=r[u],p[u]=a?void 0===i?a(c,u):a.call(i,c,u):c,u+=1;return p.length=l,p})),Element.prototype.matches||(Element.prototype.matches=Element.prototype.webkitMatchesSelector||Element.prototype.oMatchesSelector||Element.prototype.msMatchesSelector||Element.prototype.mozMatchesSelector),Element.prototype.closest||(Element.prototype.closest=function(t){for(var e=this;e;){if(e.matches(t))return e;e="SVGElement"in window&&e instanceof SVGElement?e.parentNode:e.parentElement}return null}),window.Event&&Window.prototype.Event||(window.Event=Window.prototype.Event=Document.prototype.Event=Element.prototype.Event=function(t,e){if(!t)throw new Error("Not enough arguments");var n,o=!(!e||void 0===e.bubbles)&&e.bubbles,r=!(!e||void 0===e.cancelable)&&e.cancelable;return"createEvent"in document?(n=document.createEvent("Event")).initEvent(t,o,r):((n=document.createEventObject()).type=t,n.bubbles=o,n.cancelable=r),n}),window.CustomEvent&&Window.prototype.CustomEvent||(window.CustomEvent=Window.prototype.CustomEvent=Document.prototype.CustomEvent=Element.prototype.CustomEvent=function(t,e){if(!t)throw Error('TypeError: Failed to construct "CustomEvent": An event name must be provided.');var n=new Event(t,e);return n.detail=e&&e.detail||null,n}),Node.prototype.contains||(Node.prototype.contains=function(t){for(;t=t.parentNode;)if(t===this)return!0;return!1});
diff --git a/rollup.config.js b/rollup.config.js
index ce8c7ba5..a22b9a76 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -7,15 +7,10 @@ import cleanup from 'rollup-plugin-cleanup'
 import * as pkg from "./package.json";
 
 // set headers
-const POLYFILL = process.env.POLYFILL
+const POLYFILL = process.env.POLYFILL === 'true'
 const year = (new Date).getFullYear()
 const banner = POLYFILL 
-?`/*!
-  * Native JavaScript for Bootstrap Polyfill v${pkg.version} (${pkg.homepage})
-  * Copyright 2015-${year} © ${pkg.author}
-  * Licensed under MIT (https://github.com/thednp/bootstrap.native/blob/master/LICENSE)
-  */
- "use strict";`
+?'"use strict";'
 :`/*!
   * Native JavaScript for Bootstrap v${pkg.version} (${pkg.homepage})
   * Copyright 2015-${year} © ${pkg.author}
@@ -23,8 +18,7 @@ const banner = POLYFILL
   */`
 
 const miniBanner = POLYFILL
-?`// Native JavaScript for Bootstrap Polyfill v${pkg.version} | ${year} © ${pkg.author} | ${pkg.license}-License
-"use strict";`
+? banner
 :`// Native JavaScript for Bootstrap v${pkg.version} | ${year} © ${pkg.author} | ${pkg.license}-License`
 
 // set config