diff --git a/packages/backend/test/jest.setup.ts b/packages/backend/test/jest.setup.ts
index 25fd674069..eabff432a3 100644
--- a/packages/backend/test/jest.setup.ts
+++ b/packages/backend/test/jest.setup.ts
@@ -5,6 +5,6 @@
 
 import { protectProperties } from 'jest-util';
 
-protectProperties(globalThis.ReadableStreamDefaultReader);
-protectProperties(globalThis.ReadableStreamBYOBReader);
-protectProperties(globalThis.WritableStreamDefaultWriter);
+protectProperties(ReadableStreamDefaultReader);
+protectProperties(ReadableStreamBYOBReader);
+protectProperties(WritableStreamDefaultWriter);