diff --git a/webpack.config.js b/webpack.config.js
index ccee4375..a53e1763 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -256,7 +256,7 @@ module.exports = async function(_, env) {
         filename: '_redirects',
       }),
 
-      new ScriptExtHtmlPlugin({
+      isProd && new ScriptExtHtmlPlugin({
         inline: ['first']
       }),