diff --git a/addon/utils/merge-deep.ts b/addon/utils/merge-deep.ts
index f82e0b74..3d697975 100644
--- a/addon/utils/merge-deep.ts
+++ b/addon/utils/merge-deep.ts
@@ -97,7 +97,7 @@ function mergeTargetAndSource(target: any, source: any, options: Options): any {
 
     // else safe key on object
     if (propertyIsOnObject(target, key) && isMergeableObject(source[key]) && !source[key].hasOwnProperty('value')) {
-      target[key] = mergeDeep(options.safeGet(target, key), options.safeGet(source, key), options);
+      options.safeSet(target, key, mergeDeep(options.safeGet(target, key), options.safeGet(source, key), options));
     } else {
       let next = source[key];
       if (next && next instanceof Change) {
diff --git a/tests/dummy/app/components/changeset-form.ts b/tests/dummy/app/components/changeset-form.ts
index c4a1a51a..e9d8f9e3 100644
--- a/tests/dummy/app/components/changeset-form.ts
+++ b/tests/dummy/app/components/changeset-form.ts
@@ -4,7 +4,10 @@ import Changeset from 'ember-changeset'
 
 export default class ChangesetForm extends Component {
   model = {
-    email: 'something'
+    user: {
+      email: 'something'
+    },
+    cid: '1'
   }
 
   changeset = new Changeset(this.model)
diff --git a/tests/dummy/app/templates/components/changeset-form.hbs b/tests/dummy/app/templates/components/changeset-form.hbs
index eee2fd44..7160acb7 100644
--- a/tests/dummy/app/templates/components/changeset-form.hbs
+++ b/tests/dummy/app/templates/components/changeset-form.hbs
@@ -1,15 +1,26 @@
-<h2>Changeset value: <span data-test-changeset-email>{{this.changeset.email}}</span></h2>
+<h2>Changeset Email: <span data-test-changeset-user-email>{{this.changeset.user.email}}</span></h2>
+<h2>Changeset cid: <span data-test-changeset-cid>{{this.changeset.cid}}</span></h2>
 <br />
-<h2>Model value: <span data-test-model-email>{{this.model.email}}</span></h2>
+<h2>Model Email: <span data-test-model-user-email>{{this.model.user.email}}</span></h2>
+<h2>Model cid: <span data-test-model-cid>{{this.model.cid}}</span></h2>
 
 <form
   {{on "submit" (fn this.submitForm this.changeset)}}
 >
+  <label>cid</label>
   <input
-    data-test-email
+    data-test-cid
+    type="number"
+    value={{this.changeset.cid}}
+    oninput={{action (changeset-set this.changeset "cid") value="target.value"}}
+  >
+
+  <label>email</label>
+  <input
+    data-test-user-email
     type="text"
-    value={{this.changeset.email}}
-    oninput={{action (changeset-set this.changeset "email") value="target.value"}}
+    value={{this.changeset.user.email}}
+    oninput={{action (changeset-set this.changeset "user.email") value="target.value"}}
   >
   <button data-test-submit type="submit">Submit form 1</button>
 
diff --git a/tests/integration/components/changeset-form-test.js b/tests/integration/components/changeset-form-test.js
index de44e690..d029db04 100644
--- a/tests/integration/components/changeset-form-test.js
+++ b/tests/integration/components/changeset-form-test.js
@@ -8,10 +8,12 @@ module('Integration | Component | changeset-form', function(hooks) {
 
   test('it renders', async function(assert) {
     await render(hbs`<ChangesetForm />`);
-    await fillIn('[data-test-email]', 'foo');
+    await fillIn('[data-test-user-email]', 'foo');
+    await fillIn('[data-test-cid]', 2);
     await click('[data-test-submit]');
 
-    assert.equal(find('[data-test-model-email]').textContent.trim(), 'foo', 'has email after submit');
-    assert.equal(find('[data-test-changeset-email]').textContent.trim(), 'foo', 'changeset has email after submit');
+    assert.equal(find('[data-test-model-cid]').textContent.trim(), '2', 'has email after submit');
+    assert.equal(find('[data-test-model-user-email]').textContent.trim(), 'foo', 'has email after submit');
+    assert.equal(find('[data-test-changeset-user-email]').textContent.trim(), 'foo', 'changeset has email after submit');
   });
 });