# What this PR does
Fixes a bug when current on-call users for web UI and Slack user group
are incorrect.
This happens when both conditions below are true:
- Using an ICal schedule
- Email of a user in Grafana has a different case than an event in ICal
(e.g. `User@gmail.com` in Grafana, `user@gmail.com` in ICal event)
The bug was introduced by https://github.com/grafana/oncall/pull/1169
## Which issue(s) this PR fixes
https://github.com/grafana/oncall/issues/1296
## Checklist
- [x] Tests updated
- [x] `CHANGELOG.md` updated
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