diff --git a/packages/plugin-window-unhandled-rejection/src/unhandled-rejection.ts b/packages/plugin-window-unhandled-rejection/src/unhandled-rejection.ts
index 6ed782e04..f91f05f8a 100644
--- a/packages/plugin-window-unhandled-rejection/src/unhandled-rejection.ts
+++ b/packages/plugin-window-unhandled-rejection/src/unhandled-rejection.ts
@@ -33,7 +33,7 @@ declare global {
     onunhandledrejection: OnUnhandledRejection | null
   }
   interface Error {
-    code?: string
+    code?: number | string
   }
 }