diff --git a/lib/twitter.js b/lib/twitter.js
index 1dbf3e27..b5ed201d 100644
--- a/lib/twitter.js
+++ b/lib/twitter.js
@@ -116,11 +116,12 @@ Twitter.prototype.__request = function(method, path, params, callback) {
   }
 
   // Set API base
-  if (typeof params.base !== 'undefined') {
-    base = params.base;
-    delete params.base;
+  if (params) {
+    if (typeof params.base !== 'undefined') {
+      base = params.base;
+      delete params.base;
+    }
   }
-
   // Build the options to pass to our custom request object
   var options = {
     method: method.toLowerCase(),  // Request method - get || post