diff --git a/build/gulpfile.vscode.js b/build/gulpfile.vscode.js
index 5881bc66e91..d93496f928c 100644
--- a/build/gulpfile.vscode.js
+++ b/build/gulpfile.vscode.js
@@ -47,6 +47,7 @@ const nodeModules = ['electron', 'original-fs']
 const vscodeEntryPoints = _.flatten([
 	buildfile.entrypoint('vs/workbench/workbench.desktop.main'),
 	buildfile.base,
+	buildfile.workerExtensionHost,
 	buildfile.workbenchDesktop,
 	buildfile.code
 ]);
@@ -72,6 +73,7 @@ const vscodeResources = [
 	'out-build/vs/workbench/contrib/externalTerminal/**/*.scpt',
 	'out-build/vs/workbench/contrib/webview/browser/pre/*.js',
 	'out-build/vs/workbench/contrib/webview/electron-browser/pre/*.js',
+	'out-build/vs/workbench/services/extensions/worker/extensionHostWorkerMain.js',
 	'out-build/vs/**/markdown.css',
 	'out-build/vs/workbench/contrib/tasks/**/*.json',
 	'out-build/vs/platform/files/**/*.exe',
diff --git a/src/vs/workbench/services/extensions/electron-browser/extensionService.ts b/src/vs/workbench/services/extensions/electron-browser/extensionService.ts
index 69f880a98e0..efe3a05a578 100644
--- a/src/vs/workbench/services/extensions/electron-browser/extensionService.ts
+++ b/src/vs/workbench/services/extensions/electron-browser/extensionService.ts
@@ -88,7 +88,7 @@ export class ExtensionService extends AbstractExtensionService implements IExten
 			productService
 		);
 
-		this._enableLocalWebWorker = (ENABLE_LOCAL_WEB_WORKER && this._isDev);
+		this._enableLocalWebWorker = ENABLE_LOCAL_WEB_WORKER;
 
 		if (this._extensionEnablementService.allUserExtensionsDisabled) {
 			this._notificationService.prompt(Severity.Info, nls.localize('extensionsDisabled', "All installed extensions are temporarily disabled. Reload the window to return to the previous state."), [{