diff --git a/webpack.config.js b/webpack.config.js
index 590df8b9f..0d8f1078b 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -271,7 +271,7 @@ module.exports = {
         new webpack.DefinePlugin({
             'process.env.NODE_ENV': `"${process.env.NODE_ENV || 'development'}"`,
             'process.env.API_HOST': `"${process.env.API_HOST || 'https://api.scratch.mit.edu'}"`,
-            'process.env.ROOT_URL': `"${process.env.ROOT_URL || 'https://scratch.ly'}"`,
+            'process.env.ROOT_URL': `"${process.env.ROOT_URL || 'https://scratch.mit.edu'}"`,
             'process.env.RECAPTCHA_SITE_KEY': `"${
                 process.env.RECAPTCHA_SITE_KEY || '6Lf6kK4UAAAAABKTyvdSqgcSVASEnMrCquiAkjVW'}"`,
             'process.env.ASSET_HOST': `"${process.env.ASSET_HOST || 'https://assets.scratch.mit.edu'}"`,