# config/unset
Remove a key from the global config registry.
## Syntax
[config/unset "key"]
## Parameters
- `"key"` — hierarchical registry key (string or keyword).
## Examples
[config/unset "log/max-lines"]
## Returns
Boolean — `true` if the key was present, `false` otherwise. When a key is removed, a change event with `:value nil` is published on the `"config"` pub/sub topic.
## See Also
`config/set`, `config/get`, `config/save-overrides`