Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if oculus makes changes to these terms , we will provide notice of such changes as appropriate , such as by sending an email notification to the address that you have provided , providing notice through the services and/or updating the `` last updated '' date at the top of these terms . 

```
. OPTIONS: ['Choice of law' 'Content removal' 'Unilateral termination' 'Arbitration'
 'Jurisdiction' 'None' 'Limitation of liability' 'Unilateral change'
 'Contract by using'].