diff --git a/src/index.js b/src/index.js
index 38fa73e..b27cda4 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,4 +1,6 @@
-import 'babel-polyfill';
+if (!window._babelPolyfill) {
+  require('babel-polyfill');
+}
 import API from './functions/api';
 import webhook from './functions/webhook';
 import poll from './functions/poll';