diff --git a/www/blackberry10/xhrFileTransfer.js b/www/blackberry10/xhrFileTransfer.js
index 4c6d590..87c8ec0 100644
--- a/www/blackberry10/xhrFileTransfer.js
+++ b/www/blackberry10/xhrFileTransfer.js
@@ -55,7 +55,7 @@ module.exports = {
     upload: function(win, fail, args) {
         var filePath = args[0],
             server = args[1],
-            fileKey = args[9],
+            fileKey = args[2],
             fileName = args[3],
             mimeType = args[4],
             params = args[5],
diff --git a/www/firefoxos/FileTransferProxy.js b/www/firefoxos/FileTransferProxy.js
index 305ac58..164da1a 100644
--- a/www/firefoxos/FileTransferProxy.js
+++ b/www/firefoxos/FileTransferProxy.js
@@ -49,7 +49,7 @@ module.exports = {
     upload: function(successCallback, errorCallback, args) {
         var filePath = args[0],
             server = args[1],
-            fileKey = args[9],
+            fileKey = args[2],
             fileName = args[3],
             mimeType = args[4],
             params = args[5],