diff --git a/.webpack/js.js b/.webpack/js.js
index e2e7ba23..7fd45044 100644
--- a/.webpack/js.js
+++ b/.webpack/js.js
@@ -15,7 +15,8 @@ const dirModules = './client/modules';
 const modules = './modules';
 
 const {env} = process;
-const isDev = env.NODE_ENV === 'development';
+const {NODE_ENV} = env;
+const isDev = NODE_ENV === 'development';
 
 const rootDir = join(__dirname, '..');
 const dist = resolve(rootDir, 'dist');
@@ -50,7 +51,7 @@ const rules = clean([
 
 const plugins = [
     new EnvironmentPlugin({
-        NODE_ENV: 'production',
+        NODE_ENV,
     }),
     
     new ServiceWorkerWebpackPlugin({
diff --git a/client/cloudcmd.js b/client/cloudcmd.js
index 32d54c4b..49a81d50 100644
--- a/client/cloudcmd.js
+++ b/client/cloudcmd.js
@@ -9,6 +9,8 @@ const {promisify} = require('es6-promisify');
 const wraptile = require('wraptile/legacy');
 const load = require('load.js');
 
+const isDev = process.env.NODE_ENV === 'development';
+
 const {
     registerSW,
     listenSW,
@@ -49,6 +51,9 @@ function getPrefix(prefix) {
 }
 
 const onUpdateFound = wraptile(async (config) => {
+    if (isDev)
+        return;
+    
     const {DOM} = window;
     const prefix = getPrefix(config.prefix);
     const js = promisify(load.js);