diff --git a/lib/_http_agent.js b/lib/_http_agent.js
index 5828927786288f..fd74daafec6486 100644
--- a/lib/_http_agent.js
+++ b/lib/_http_agent.js
@@ -115,6 +115,9 @@ Agent.prototype.addRequest = function(req, options) {
     };
   }
 
+  options = util._extend({}, options);
+  options = util._extend(options, this.options);
+
   var name = this.getName(options);
   if (!this.sockets[name]) {
     this.sockets[name] = [];