diff --git a/src/dom/globals/worker.ts b/src/dom/globals/worker.ts
index b5b4f77..645aca6 100644
--- a/src/dom/globals/worker.ts
+++ b/src/dom/globals/worker.ts
@@ -17,7 +17,7 @@ import {
  * that also has {@link WorkerGlobalScope.importScripts} as
  * {@link WorkerGlobalScope} in some cases cannot be depended on directly.
  */
-export interface WorkerGlobalScopeWithImportScripts
+export declare interface WorkerGlobalScopeWithImportScripts
   extends WindowOrWorkerGlobalScope {
   importScripts: (...url: string[]) => void;
 }