diff --git a/lib/actor.js b/lib/actor.js
index e365892..463eddc 100644
--- a/lib/actor.js
+++ b/lib/actor.js
@@ -4,7 +4,7 @@ const systemMap = require('./system-map');
 const { ActorReference, TemporaryReference, Nobody } = require('./references');
 const Queue = require('denque');
 const assert = require('assert');
-const freeze = require('deep-freeze-node');
+const freeze = require('./freeze');
 const { Subject } = require('rxjs');
 const { stop } = require('./functions');
 const { defaultSupervisionPolicy, SupervisionActions } = require('./supervision');
diff --git a/lib/paths.js b/lib/paths.js
index 25fe9ab..bc15247 100644
--- a/lib/paths.js
+++ b/lib/paths.js
@@ -1,4 +1,4 @@
-const freeze = require('deep-freeze-node');
+const freeze = require('./freeze');
 
 class ActorPath {
   constructor (parts) {
diff --git a/lib/persistence/persistence-engine.js b/lib/persistence/persistence-engine.js
index 4fb566e..11dcedb 100644
--- a/lib/persistence/persistence-engine.js
+++ b/lib/persistence/persistence-engine.js
@@ -1,4 +1,4 @@
-const freeze = require('deep-freeze-node');
+const freeze = require('../freeze');
 const assert = require('assert');
 
 class AbstractPersistenceEngine {
diff --git a/lib/persistence/persistent-actor.js b/lib/persistence/persistent-actor.js
index b90df0a..0aa6949 100644
--- a/lib/persistence/persistent-actor.js
+++ b/lib/persistence/persistent-actor.js
@@ -1,7 +1,7 @@
 require('rxjs');
 const { PersistedEvent, PersistedSnapshot } = require('./persistence-engine');
 const { Actor } = require('../actor');
-const freeze = require('deep-freeze-node');
+const freeze = require('../freeze');
 const { applyOrThrowIfStopped } = require('../system-map');
 
 class PersistentActor extends Actor {
diff --git a/lib/references.js b/lib/references.js
index 2b5b90d..a65732f 100644
--- a/lib/references.js
+++ b/lib/references.js
@@ -1,4 +1,4 @@
-const freeze = require('deep-freeze-node');
+const freeze = require('./freeze');
 
 class Nobody {
   constructor () {
diff --git a/test/freeze.js b/test/freeze.js
new file mode 100644
index 0000000..be822e7
--- /dev/null
+++ b/test/freeze.js
@@ -0,0 +1,69 @@
+/* eslint-env mocha */
+/* eslint-disable no-unused-expressions */
+var freeze = require('../lib/freeze');
+require('chai').should();
+
+describe('freeze', function () {
+  let person = {};
+  let expectedPerson = {};
+
+  beforeEach(function () {
+    person = {
+      name: 'John',
+      surname: 'Johnson',
+      age: 26,
+      address: {
+        street: '1st Street',
+        city: 'Los Angeles',
+        country: 'USA'
+      },
+      vehicles: ['BMW', 'Ferrari', 'Lamborghini']
+    };
+
+    expectedPerson = {
+      name: 'John',
+      surname: 'Johnson',
+      age: 26,
+      address: {
+        street: '1st Street',
+        city: 'Los Angeles',
+        country: 'USA'
+      },
+      vehicles: ['BMW', 'Ferrari', 'Lamborghini']
+    };
+  });
+
+  it('should not override any object properties', function () {
+    person = freeze(person);
+    person.name = 'Jack';
+    person.surname = 'Jackson';
+    person.age = 18;
+    person.address = {
+      street: 'Third Street',
+      city: 'San Francisco',
+      country: 'USA'
+    };
+    person.vehicles = ['Toyota'];
+    person.name = 'Jack';
+    person.surname = 'Jackson';
+    person.age = 18;
+    person.address.street = 'Third Street';
+    person.address.city = 'San Francisco';
+    person.address.country = 'USA';
+    person.vehicles[0] = 'Toyota';
+
+    delete person.vehicles[1];
+    delete person.vehicles[2];
+
+    person.should.deep.equal(expectedPerson, 'any object properties should not be overridden');
+  });
+
+  it('should not add new properties to an object', function () {
+    person = freeze(person);
+
+    person.occupation = 'Lawyer';
+    person.nickname = 'JJ';
+
+    person.should.deep.equal(expectedPerson);
+  });
+});