diff --git a/config/jest.config.js b/config/jest.config.js
index fd72ccf..bddbcd5 100644
--- a/config/jest.config.js
+++ b/config/jest.config.js
@@ -1,6 +1,7 @@
 const path = require('path');
 
 module.exports = {
+  testEnvironment: "jsdom",
   collectCoverage: true,
   preset: 'ts-jest',
   rootDir: path.resolve(__dirname, '..'),
diff --git a/tests/api.spec.ts b/tests/api.spec.ts
index 0ff8259..735db12 100644
--- a/tests/api.spec.ts
+++ b/tests/api.spec.ts
@@ -1,7 +1,3 @@
-/**
- * @jest-environment jsdom
- */
-
 import skift from '../src/index';
 import { SplitTest } from '../src/splitTest';
 
diff --git a/tests/config.spec.ts b/tests/config.spec.ts
index be783ee..5ec3392 100644
--- a/tests/config.spec.ts
+++ b/tests/config.spec.ts
@@ -1,7 +1,3 @@
-/**
- * @jest-environment jsdom
- */
-
 import config from '../src/config';
 import skift from '../src/index';