# Chapter 21 Page 588 - Override Property Error

**URL:** <https://forums.kodeco.com/t/chapter-21-page-588-override-property-error/21341>\
**Category:** 2D iOS & tvOS Games by Tutorials\
**Created:** [October 18, 2016, 12:56pm UTC](https://forums.kodeco.com/t/chapter-21-page-588-override-property-error/21341 "2016-10-18T12:56:30Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![jzt5061](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/jzt5061/32/62748_2.png) [@jzt5061](https://forums.kodeco.com/u/jzt5061)\
**Post date:** [October 18, 2016, 12:56pm UTC](https://forums.kodeco.com/t/chapter-21-page-588-override-property-error/21341/1 "2016-10-18T12:56:30Z")

</div>

I recently updated to Swift 3 and I’m getting a error for when i do the

> weak var entity: GKEntity!

I’m receiving an error saying I cannot override a property with type ‘GKEntity’. Has anyone run into this? If so, how can I move forward?

---

<div class="post-metadata">

**Author:** ![caroline](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/caroline/32/111867_2.png) [@caroline](https://forums.kodeco.com/u/caroline)\
**Post date:** [October 23, 2016, 1:03am UTC](https://forums.kodeco.com/t/chapter-21-page-588-override-property-error/21341/2 "2016-10-23T01:03:18Z")

</div>

@jzt5061 - `entity` is a new property on `SKNode` in iOS 10, so you just have to change the name of your `entity` property

[https://developer.apple.com/reference/spritekit/sknode/1640688-entity](https://developer.apple.com/reference/spritekit/sknode/1640688-entity)