# Username changed after Discourse upgrade

**URL:** https://meta.discourse.org/t/username-changed-after-discourse-upgrade/92099
**Category:** Support
**Created:** [July 11, 2018, 3:55pm UTC](https://meta.discourse.org/t/username-changed-after-discourse-upgrade/92099 "2018-07-11T15:55:02Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![david](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/david/32/157490_2.png) [@david](https://meta.discourse.org/u/david)
#### Post date: [July 11, 2018, 4:27pm UTC](https://meta.discourse.org/t/username-changed-after-discourse-upgrade/92099/2 "2018-07-11T16:27:25Z")

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There is likely a group with the name `martin`. Users and groups cannot share the same name.

There was previously a bug which allowed this to happen, but it has now been fixed - that’s why your username has been changed automatically.

We should probably update the error message here to make it clear that a username must not match any group names. Added to my list to investigate

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_[View the full topic](https://meta.discourse.org/t/username-changed-after-discourse-upgrade/92099)._