diff --git a/index.ts b/index.ts
index eee91d17..f5c4b2f4 100644
--- a/index.ts
+++ b/index.ts
@@ -2,4 +2,8 @@
 
 import { JavaScriptObfuscator } from './src/JavaScriptObfuscator';
 
+if (!(<any>global)._babelPolyfill) {
+    require('babel-polyfill');
+}
+
 module.exports = JavaScriptObfuscator;
diff --git a/package.json b/package.json
index be173f26..ad06e2b7 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "javascript-obfuscator": "./bin/javascript-obfuscator.js"
   },
   "dependencies": {
+    "babel-polyfill": "^6.9.1",
     "chance": "^1.0.3",
     "commander": "^2.9.0",
     "escodegen": "^1.8.0",