diff --git a/lib/defaults.js b/lib/defaults.js
index 65a25d5143..c9614260d3 100644
--- a/lib/defaults.js
+++ b/lib/defaults.js
@@ -15,12 +15,13 @@ function setContentTypeIfUnset(headers, value) {
 
 function getDefaultAdapter() {
   var adapter;
-  if (typeof XMLHttpRequest !== 'undefined') {
-    // For browsers use XHR adapter
-    adapter = require('./adapters/xhr');
-  } else if (typeof process !== 'undefined') {
+  // Only Node.JS has a process variable that is of [[Class]] process
+  if (typeof process !== 'undefined' && Object.prototype.toString.call(process) === '[object process]') {
     // For node use HTTP adapter
     adapter = require('./adapters/http');
+  } else if (typeof XMLHttpRequest !== 'undefined') {
+    // For browsers use XHR adapter
+    adapter = require('./adapters/xhr');
   }
   return adapter;
 }