diff --git a/test/parallel/test-cluster-fork-env.js b/test/parallel/test-cluster-fork-env.js
index 112aeb087c49a1..faa8b954e4443c 100644
--- a/test/parallel/test-cluster-fork-env.js
+++ b/test/parallel/test-cluster-fork-env.js
@@ -1,5 +1,10 @@
 'use strict';
 require('../common');
+
+// This test checks that arguments provided to cluster.fork() will create
+// new environment variables and override existing environment variables
+// in the created worker process.
+
 const assert = require('assert');
 const cluster = require('cluster');