diff --git a/app/scripts/metamask-controller.test.js b/app/scripts/metamask-controller.test.js
index edb662bf6..61995363e 100644
--- a/app/scripts/metamask-controller.test.js
+++ b/app/scripts/metamask-controller.test.js
@@ -108,7 +108,6 @@ describe('MetaMaskController', function () {
   const noop = () => undefined;
 
   before(async function () {
-    globalThis.AbortController = window.AbortController;
     await ganacheServer.start();
   });
 
@@ -157,7 +156,6 @@ describe('MetaMaskController', function () {
 
   after(async function () {
     await ganacheServer.quit();
-    delete globalThis.AbortController;
   });
 
   describe('#getAccounts', function () {