diff --git a/lib/dao.js b/lib/dao.js
index 4cf85929..6f07907b 100644
--- a/lib/dao.js
+++ b/lib/dao.js
@@ -771,6 +771,7 @@ DataAccessObject.prototype.save = function (options, callback) {
   function save() {
     inst.trigger('save', function (saveDone) {
       inst.trigger('update', function (updateDone) {
+        data = removeUndefined(data);
         inst._adapter().save(modelName, inst.constructor._forDB(data), function (err) {
           if (err) {
             return callback(err, inst);