diff --git a/remix-tests/tests/testRunner.ts b/remix-tests/tests/testRunner.ts
index 094c4632f8..3671f196f3 100644
--- a/remix-tests/tests/testRunner.ts
+++ b/remix-tests/tests/testRunner.ts
@@ -1,3 +1,4 @@
+import 'mocha'
 import * as async from 'async'
 import Web3 from 'web3'
 import * as assert from 'assert'