diff --git a/bin/_mocha.js b/bin/_mocha.js
index 2ea8317467..62aad03e3a 100755
--- a/bin/_mocha.js
+++ b/bin/_mocha.js
@@ -1,10 +1,8 @@
 #!/usr/bin/env node
 'use strict';
 
-/**
- * This file remains for backwards compatibility only.
- * Don't put stuff in this file.
- * @see module:lib/cli
- */
+// Node has a hard time telling what loader to use without an extension
+// If you use the node --loader option, use this
+// https://github.com/mochajs/mocha/pull/4647/files?file-filters%5B%5D=.json
 
 require('../lib/cli').main();