diff --git a/extension/webpack/base.config.js b/extension/webpack/base.config.js
index 036f29e1..21559612 100644
--- a/extension/webpack/base.config.js
+++ b/extension/webpack/base.config.js
@@ -8,7 +8,7 @@ const mock = `${extpath}chromeAPIMock.js`;
 
 const baseConfig = (params) => ({
   // devtool: 'source-map',
-  mode: 'production',
+  mode: params.mode,
   entry: params.input || {
     background: [mock, `${extpath}background/index`],
     options: [mock, `${extpath}options/index`],
diff --git a/extension/webpack/dev.config.babel.js b/extension/webpack/dev.config.babel.js
index 918b3865..cca1fa78 100644
--- a/extension/webpack/dev.config.babel.js
+++ b/extension/webpack/dev.config.babel.js
@@ -3,6 +3,7 @@ import webpack from 'webpack';
 import baseConfig from './base.config';
 
 let config = baseConfig({
+  mode: 'development',
   inputExtra: {
     page: [path.join(__dirname, '../src/browser/extension/inject/pageScript')],
   },
diff --git a/extension/webpack/prod.config.babel.js b/extension/webpack/prod.config.babel.js
index 3a84a8fd..ff04e735 100644
--- a/extension/webpack/prod.config.babel.js
+++ b/extension/webpack/prod.config.babel.js
@@ -2,6 +2,10 @@ import path from 'path';
 import baseConfig from './base.config';
 
 export default baseConfig({
+  mode: 'production',
+  inputExtra: {
+    page: [path.join(__dirname, '../src/browser/extension/inject/pageScript')],
+  },
   output: { path: path.join(__dirname, '../build/extension') },
   globals: {
     'process.env': {
diff --git a/extension/webpack/prod.firefox.config.babel.js b/extension/webpack/prod.firefox.config.babel.js
index 2dffc670..54fdf8b9 100644
--- a/extension/webpack/prod.firefox.config.babel.js
+++ b/extension/webpack/prod.firefox.config.babel.js
@@ -2,6 +2,7 @@ import path from 'path';
 import baseConfig from './base.config';
 
 export default baseConfig({
+  mode: 'production',
   output: { path: path.join(__dirname, '../build/extension') },
   globals: {
     'process.env': {
diff --git a/extension/webpack/wrap.config.babel.js b/extension/webpack/wrap.config.babel.js
index 5297ecf3..25b57d11 100644
--- a/extension/webpack/wrap.config.babel.js
+++ b/extension/webpack/wrap.config.babel.js
@@ -2,6 +2,7 @@ import path from 'path';
 import baseConfig from './base.config';
 
 export default baseConfig({
+  mode: 'production',
   input: {
     page: [path.join(__dirname, '../src/browser/extension/inject/pageScript')],
   },