diff --git a/lib/storage-handler.js b/lib/storage-handler.js
index 1497ef0..f56c669 100644
--- a/lib/storage-handler.js
+++ b/lib/storage-handler.js
@@ -3,11 +3,12 @@ var StringDecoder = require('string_decoder').StringDecoder;
 
 /**
  * Handle multipart/form-data upload to the storage service
- * @param provider The storage service provider
+ * @param {Object} provider The storage service provider
  * @param {Request} req The HTTP request
  * @param {Response} res The HTTP response
  * @param {String} container The container name
- * @param {Function} cb The callback
+ * @callback {Function} cb Callback function
+ * @header storageService.upload(provider, req, res, container, cb) 
  */
 exports.upload = function (provider, req, res, container, cb) {
   var form = new IncomingForm(this.options);
@@ -103,13 +104,14 @@ exports.upload = function (provider, req, res, container, cb) {
 }
 
 /**
- * Handle download from a container/file
- * @param provider The storage service provider
+ * Handle download from a container/file.
+ * @param {Object} provider The storage service provider
  * @param {Request} req The HTTP request
  * @param {Response} res The HTTP response
  * @param {String} container The container name
  * @param {String} file The file name
- * @param {Function} cb The callback
+ * @callback {Function} cb Callback function.
+ * @header storageService.download(provider, req, res, container, file, cb) 
  */
 exports.download = function (provider, req, res, container, file, cb) {
   var reader = provider.download({