diff --git a/lib/internal/bootstrap/node.js b/lib/internal/bootstrap/node.js
index f27652e4fffb4c..ee83a555170c3b 100644
--- a/lib/internal/bootstrap/node.js
+++ b/lib/internal/bootstrap/node.js
@@ -313,6 +313,8 @@ const { emitWarning, emitWarningSync } = require('internal/process/warning');
 const { getOptionValue } = require('internal/options');
 
 let kTypeStrippingMode = null;
+// This must be a getter, as getOptionValue does not work
+// before bootstrapping.
 ObjectDefineProperty(process.features, 'typescript', {
   __proto__: null,
   get() {