diff --git a/test/fixtures/cases.js b/test/fixtures/cases.js
index 22d082d5..a7aa71b4 100644
--- a/test/fixtures/cases.js
+++ b/test/fixtures/cases.js
@@ -3,7 +3,7 @@
 const { Buffer } = require('buffer')
 const Bignum = require('bignumber.js').BigNumber
 const { URL } = require('iso-url')
-const expect = require('chai').expect
+const { expect } = require('aegir/utils/chai')
 
 const cbor = require('../../')
 const constants = require('../../src/constants')