diff --git a/packages/react-scripts/config/webpack.config.dev.js b/packages/react-scripts/config/webpack.config.dev.js
index e1b001952c3..00bfb051268 100644
--- a/packages/react-scripts/config/webpack.config.dev.js
+++ b/packages/react-scripts/config/webpack.config.dev.js
@@ -266,7 +266,6 @@ module.exports = {
                   cacheDirectory: true,
                   // Don't waste time on Gzipping the cache
                   cacheCompression: false,
-                  highlightCode: true,
                 },
               },
             ],
@@ -307,7 +306,6 @@ module.exports = {
                     'react-scripts',
                   ]),
                   // @remove-on-eject-end
-                  highlightCode: true,
                   // If an error happens in a package, it's possible to be
                   // because it was compiled. Thus, we don't want the browser
                   // debugger to show the original code. Instead, the code
diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index e10485de3b4..d19c5c4eb29 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -305,7 +305,6 @@ module.exports = {
                   // Save disk space when time isn't as important
                   cacheCompression: true,
                   compact: true,
-                  highlightCode: true,
                 },
               },
             ],
@@ -341,7 +340,6 @@ module.exports = {
                     'react-scripts',
                   ]),
                   // @remove-on-eject-end
-                  highlightCode: true,
                   // If an error happens in a package, it's possible to be
                   // because it was compiled. Thus, we don't want the browser
                   // debugger to show the original code. Instead, the code