diff --git a/lib/persisted-model.js b/lib/persisted-model.js
index 367e27a9..65ec8524 100644
--- a/lib/persisted-model.js
+++ b/lib/persisted-model.js
@@ -1440,7 +1440,7 @@ module.exports = function(registry) {
         switch (update.type) {
           case Change.UPDATE:
             tasks.push(function(cb) {
-              applyUpdate(Model, id, current, update.data, update.change, conflicts, options, cb);
+              applyUpdate(Model, id, {_id:current.id || current._id}, update.data, update.change, conflicts, options, cb);
             });
             break;
 
@@ -1451,7 +1451,7 @@ module.exports = function(registry) {
             break;
           case Change.DELETE:
             tasks.push(function(cb) {
-              applyDelete(Model, id, current, update.change, conflicts, options, cb);
+              applyDelete(Model, id, {_id:current.id || current._id}, update.change, conflicts, options, cb);
             });
             break;
         }