diff --git a/lib/_stream_duplex.js b/lib/_stream_duplex.js
index 1ccb931260ddbd..b123cdcb4d776f 100644
--- a/lib/_stream_duplex.js
+++ b/lib/_stream_duplex.js
@@ -35,7 +35,7 @@ const Writable = require('_stream_writable');
 util.inherits(Duplex, Readable);
 
 {
-  // avoid scope creep, the keys array can then be collected
+  // Allow the keys array to be GC'ed.
   const keys = Object.keys(Writable.prototype);
   for (var v = 0; v < keys.length; v++) {
     const method = keys[v];
diff --git a/lib/net.js b/lib/net.js
index 9313a6dbc0c45c..68dde9cac3615e 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -244,7 +244,7 @@ function Socket(options) {
   else
     options = util._extend({}, options);
 
-  const aho = options.allowHalfOpen;
+  const allowHalfOpen = options.allowHalfOpen;
 
   // Prevent the "no-half-open enforcer" from being inherited from `Duplex`.
   options.allowHalfOpen = true;
@@ -253,7 +253,7 @@ function Socket(options) {
   stream.Duplex.call(this, options);
 
   // Default to *not* allowing half open sockets.
-  this.allowHalfOpen = Boolean(aho);
+  this.allowHalfOpen = Boolean(allowHalfOpen);
 
   if (options.handle) {
     this._handle = options.handle; // private