diff --git a/src/tests/object.test.ts b/src/tests/object.test.ts
index 4f2ee7f0f..e43e65554 100644
--- a/src/tests/object.test.ts
+++ b/src/tests/object.test.ts
@@ -445,6 +445,15 @@ describe('object module', () => {
       const result = _.assign({}, { b: 'y' })
       expect(result).toEqual({ b: 'y' })
     })
+    test('works with Object.create(null)', () => {
+      const object = { a: Object.create(null) }
+      object.a.b = 1
+
+      const result = _.assign(object, { a: { c: 2 } })
+
+      expect(result).toEqual({ a: { b: 1, c: 2 } })
+      expect(Object.getPrototypeOf(result.a)).toBe(null)
+    })
   })
 
   describe('keys function', () => {
@@ -477,6 +486,14 @@ describe('object module', () => {
         'enemies.0.power'
       ])
     })
+    test('works with Object.create(null)', () => {
+      const object = Object.create(null)
+      object.a = 1
+      object.b = [2]
+      object.c = { d: 3 }
+      const result = _.keys(object)
+      expect(result).toEqual(['a', 'b.0', 'c.d'])
+    })
   })
 
   describe('set function', () => {