diff --git a/third_party/chaijs/chai.js b/third_party/chaijs/chai.js
index 39429c51b912..067a18fb688d 100644
--- a/third_party/chaijs/chai.js
+++ b/third_party/chaijs/chai.js
@@ -10475,7 +10475,7 @@ module.exports = {
 var promiseExists = typeof Promise === 'function';
 
 /* eslint-disable no-undef */
-var globalObject = typeof self === 'object' ? self : global; // eslint-disable-line id-blacklist
+var globalObject = typeof self === 'object' ? self : null; // eslint-disable-line id-blacklist
 
 var symbolExists = typeof Symbol !== 'undefined';
 var mapExists = typeof Map !== 'undefined';