diff --git a/build/vite/setup-dev.ts b/build/vite/setup-dev.ts
index c1df4861082..8f1f997599c 100644
--- a/build/vite/setup-dev.ts
+++ b/build/vite/setup-dev.ts
@@ -6,13 +6,25 @@
 /// <reference path="../../src/typings/vscode-globals-product.d.ts" />
 
 import { enableHotReload } from '../../src/vs/base/common/hotReload.ts';
-import { InstantiationType, registerSingleton } from '../../src/vs/platform/instantiation/common/extensions.ts';
+import { getSingletonServiceDescriptors, InstantiationType, registerSingleton } from '../../src/vs/platform/instantiation/common/extensions.ts';
 import { IWebWorkerService } from '../../src/vs/platform/webWorker/browser/webWorkerService.ts';
 // eslint-disable-next-line local/code-no-standalone-editor
 import { StandaloneWebWorkerService } from '../../src/vs/editor/standalone/browser/services/standaloneWebWorkerService.ts';
 
 enableHotReload();
+
 registerSingleton(IWebWorkerService, StandaloneWebWorkerService, InstantiationType.Eager);
+const descriptors = getSingletonServiceDescriptors();
+
+// Patch push to ignore future IWebWorkerService registrations.
+// This is hot-reload dev only, so it is fine.
+const originalPush = descriptors.push;
+descriptors.push = function (item: any) {
+	if (item[0] === IWebWorkerService) {
+		return this.length;
+	}
+	return originalPush.call(this, item);
+};
 
 globalThis._VSCODE_DISABLE_CSS_IMPORT_MAP = true;
 globalThis._VSCODE_USE_RELATIVE_IMPORTS = true;
diff --git a/build/vite/workbench-electron.ts b/build/vite/workbench-electron.ts
index 49578ca4948..c50d57d1c15 100644
--- a/build/vite/workbench-electron.ts
+++ b/build/vite/workbench-electron.ts
@@ -3,6 +3,6 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-import './setup-dev';
 import '../../src/vs/code/electron-browser/workbench/workbench';
+import './setup-dev';