diff --git a/webpack/webpack.prod.js b/webpack/webpack.prod.js
index a48a8c17f..c4bb88e5c 100644
--- a/webpack/webpack.prod.js
+++ b/webpack/webpack.prod.js
@@ -72,7 +72,7 @@ module.exports = merge.smart(common, {
                 }
             }),
             new webpack.BannerPlugin({
-                banner: `time: ${new Date().toLocaleString()}; branch: ${git(
+                banner: `time: ${new Date().toLocaleString("en-US")}; branch: ${git(
                     'name-rev --name-only HEAD'
                 )} commit: ${git(
                     'rev-parse HEAD'