diff --git a/lib/defaults.js b/lib/defaults.js
index 04d89eb..6a51c2c 100644
--- a/lib/defaults.js
+++ b/lib/defaults.js
@@ -8,7 +8,7 @@ var DEFAULT_CONTENT_TYPE = {
 };
 
 module.exports = {
-  transformRequest: [function transformResponseJSON(data, headers) {
+  transformRequest: [function transformRequestJSON(data, headers) {
     if (utils.isFormData(data)) {
       return data;
     }