diff --git a/extensions/shared.webpack.config.js b/extensions/shared.webpack.config.js
index a33fa89ce30c8..37eed9c9b853d 100644
--- a/extensions/shared.webpack.config.js
+++ b/extensions/shared.webpack.config.js
@@ -13,7 +13,7 @@ const fs = require('fs');
 const merge = require('merge-options');
 const CopyWebpackPlugin = require('copy-webpack-plugin');
 const { NLSBundlePlugin } = require('vscode-nls-dev/lib/webpack-bundler');
-const { DefinePlugin } = require('webpack');
+const { DefinePlugin, optimize } = require('webpack');
 
 function withNodeDefaults(/**@type WebpackConfig*/extConfig) {
 	/** @type WebpackConfig */
@@ -145,6 +145,9 @@ function withBrowserDefaults(/**@type WebpackConfig*/extConfig, /** @type Additi
 }
 
 const browserPlugins = [
+	new optimize.LimitChunkCountPlugin({
+		maxChunks: 1
+	}),
 	new CopyWebpackPlugin({
 		patterns: [
 			{ from: 'src', to: '.', globOptions: { ignore: ['**/test/**', '**/*.ts'] }, noErrorOnMissing: true }