diff --git a/test/unit/app/account-import-strategies.spec.js b/test/unit/app/account-import-strategies.spec.js
index 8bfb571b8..ab7b0136d 100644
--- a/test/unit/app/account-import-strategies.spec.js
+++ b/test/unit/app/account-import-strategies.spec.js
@@ -1,7 +1,6 @@
 import assert from 'assert'
 import ethUtil from 'ethereumjs-util'
 import accountImporter from '../../../app/scripts/account-import-strategies/index'
-import { assertRejects } from '../test-utils'
 
 describe('Account Import Strategies', function () {
   const privkey = '0x4cfd3e90fc78b0f86bf7524722150bb8da9c60cd532564d7ff43f5716514f553'
@@ -14,25 +13,25 @@ describe('Account Import Strategies', function () {
     })
 
     it('throws an error for empty string private key', async () => {
-      assertRejects(async function () {
+      assert.rejects(async function () {
         await accountImporter.importAccount('Private Key', [ '' ])
       }, Error, 'no empty strings')
     })
 
     it('throws an error for undefined string private key', async () => {
-      assertRejects(async function () {
+      assert.rejects(async function () {
         await accountImporter.importAccount('Private Key', [ undefined ])
       })
     })
 
     it('throws an error for undefined string private key', async () => {
-      assertRejects(async function () {
+      assert.rejects(async function () {
         await accountImporter.importAccount('Private Key', [])
       })
     })
 
     it('throws an error for invalid private key', async () => {
-      assertRejects(async function () {
+      assert.rejects(async function () {
         await accountImporter.importAccount('Private Key', [ 'popcorn' ])
       })
     })
diff --git a/test/unit/test-utils.js b/test/unit/test-utils.js
deleted file mode 100644
index 5cac52ff2..000000000
--- a/test/unit/test-utils.js
+++ /dev/null
@@ -1,15 +0,0 @@
-import assert from 'assert'
-
-// assert.rejects added in node v10
-export async function assertRejects (asyncFn, regExp) {
-  let f = () => {}
-  try {
-    await asyncFn()
-  } catch (error) {
-    f = () => {
-      throw error
-    }
-  } finally {
-    assert.throws(f, regExp)
-  }
-}