diff --git a/src/polyfills.js b/src/polyfills.js
deleted file mode 100644
index 54d99959..00000000
--- a/src/polyfills.js
+++ /dev/null
@@ -1,12 +0,0 @@
-// Promise global, Used ( at least ) by 'whatwg-fetch'. And required by IE 11
-
-import win from "core/window"
-
-if(typeof win.Promise === "undefined") {
-  require("core-js/fn/promise")
-}
-
-// Required by IE 11
-if(!String.prototype.startsWith) {
-  require("core-js/es6/string")
-}
diff --git a/webpack/core.babel.js b/webpack/core.babel.js
index df2e1adf..05ed8ebb 100644
--- a/webpack/core.babel.js
+++ b/webpack/core.babel.js
@@ -14,7 +14,6 @@ const result = configBuilder(
   {
     entry: {
       "swagger-ui": [
-        // "./src/polyfills.js", // TODO: remove?
         "./src/index.js",
       ],
     },
diff --git a/webpack/dev.babel.js b/webpack/dev.babel.js
index 7d152d01..a6674e98 100644
--- a/webpack/dev.babel.js
+++ b/webpack/dev.babel.js
@@ -18,11 +18,9 @@ const devConfig = configBuilder(
     mode: "development",
     entry: {
       "swagger-ui-bundle": [
-        "./src/polyfills.js", // TODO: remove?
         "./src/core/index.js",
       ],
       "swagger-ui-standalone-preset": [
-        "./src/polyfills", // TODO: remove?
         "./src/standalone/index.js",
       ],
       "swagger-ui": "./src/style/main.scss",