diff --git a/extension/webpack/prod.config.babel.js b/extension/webpack/prod.config.babel.js
index a00daf7b..ff04e735 100644
--- a/extension/webpack/prod.config.babel.js
+++ b/extension/webpack/prod.config.babel.js
@@ -1,7 +1,7 @@
 import path from 'path';
 import baseConfig from './base.config';
 
-const config = baseConfig({
+export default baseConfig({
   mode: 'production',
   inputExtra: {
     page: [path.join(__dirname, '../src/browser/extension/inject/pageScript')],
@@ -18,5 +18,3 @@ const config = baseConfig({
     '../src/browser/extension/manifest.json'
   ),
 });
-
-export default config;
diff --git a/extension/webpack/prod.firefox.config.babel.js b/extension/webpack/prod.firefox.config.babel.js
index 08611e43..54fdf8b9 100644
--- a/extension/webpack/prod.firefox.config.babel.js
+++ b/extension/webpack/prod.firefox.config.babel.js
@@ -1,7 +1,7 @@
 import path from 'path';
 import baseConfig from './base.config';
 
-const config = baseConfig({
+export default baseConfig({
   mode: 'production',
   output: { path: path.join(__dirname, '../build/extension') },
   globals: {
@@ -15,5 +15,3 @@ const config = baseConfig({
     '../src/browser/firefox/manifest.json'
   ),
 });
-
-export default config;
diff --git a/extension/webpack/wrap.config.babel.js b/extension/webpack/wrap.config.babel.js
index 3e273c5a..25b57d11 100644
--- a/extension/webpack/wrap.config.babel.js
+++ b/extension/webpack/wrap.config.babel.js
@@ -1,7 +1,7 @@
 import path from 'path';
 import baseConfig from './base.config';
 
-const config = baseConfig({
+export default baseConfig({
   mode: 'production',
   input: {
     page: [path.join(__dirname, '../src/browser/extension/inject/pageScript')],
@@ -13,5 +13,3 @@ const config = baseConfig({
     },
   },
 });
-
-export default config;