diff --git a/api/controllers/todoListController.js b/api/controllers/todoListController.js
index f267eef..595b6f5 100644
--- a/api/controllers/todoListController.js
+++ b/api/controllers/todoListController.js
@@ -32,7 +32,7 @@ exports.read_a_task = function(req, res) {
 };
 
 exports.update_a_task = function(req, res) {
-  Task.findOneAndUpdate(req.params.taskId, req.body, {new: true}, function(err, task) {
+  Task.findOneAndUpdate({_id:req.params.taskId}, req.body, {new: true}, function(err, task) {
     if (err)
       res.send(err);
     res.json(task);