diff --git a/packages/react-scripts/config/webpack.config.dev.js b/packages/react-scripts/config/webpack.config.dev.js
index c8aa82cabab23a49ca36b32edb1a882bdf81b2b6..a016510f1fadadc18f75990724f2d01418318100 100644
--- a/packages/react-scripts/config/webpack.config.dev.js
+++ b/packages/react-scripts/config/webpack.config.dev.js
@@ -31,7 +31,8 @@ const publicUrl = '';
 const env = getClientEnvironment(publicUrl);
 
 // Options for PostCSS as we reference these options twice
-// Adds vendor prefixing to support IE9 and above
+// Adds vendor prefixing based on your specified browser support in
+// package.json
 const postCSSLoaderOptions = {
   // Necessary for external CSS imports to work
   // https://github.com/facebookincubator/create-react-app/issues/2677
diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index e667ac162511f4bbd3dae11ca6fd76b9cda91ed9..578ef0de54adfe0deb7ee1ea23090e5b3f8f9c88 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -56,7 +56,8 @@ const extractTextPluginOptions = shouldUseRelativeAssetPaths
   : {};
 
 // Options for PostCSS as we reference these options twice
-// Adds vendor prefixing to support IE9 and above
+// Adds vendor prefixing based on your specified browser support in
+// package.json
 const postCSSLoaderOptions = {
   // Necessary for external CSS imports to work
   // https://github.com/facebookincubator/create-react-app/issues/2677