diff --git a/document.js b/document.js
index e5acb28..2f8d214 100644
--- a/document.js
+++ b/document.js
@@ -442,6 +442,8 @@ Document.prototype._saveContent = function(body) {
   for (key in body) {
     if (key === '_rev') {
       this._revision = body[key];
+    } else if (key === '_id') {
+      this._id = body[key];
     } else {
       this._body[key] = body[key];
     }
diff --git a/package.json b/package.json
index 9f16a61..956fcd1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cushion",
-  "version": "1.6.2",
+  "version": "1.6.3",
   "description": "A CouchDB API for Node.js",
   "keywords": [
     "couchdb"
diff --git a/test/3-document-test.js b/test/3-document-test.js
index f355fb4..7e34921 100644
--- a/test/3-document-test.js
+++ b/test/3-document-test.js
@@ -40,6 +40,8 @@ exports.tests = [{
   'url': ['PUT', config.database + '/' + config.document, {}],
   'callback': function(error, document) {
     expect(document).to.be.an('object').and.to.have.property('_id');
+    expect(document._body).to.be.an('object').and.to.not.have.property('_id');
+    expect(document._body).to.be.an('object').and.to.not.have.property('_rev');
   },
 }, {
   'message': 'load document',