# tmux.Session.UnsetEnvironment

- **Module:** tmux.Session
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/52968a3181c1c9e6d1b26c565d4b170968ae61c0/tmux/environment.go#L138
- **Page:** https://libtmux.org/en/go/latest/reference/tmux-session-unsetenvironment/

```
tmux.Session.UnsetEnvironment(ctx: context.Context, name: string) -> error
```

UnsetEnvironment deletes a value from this session's tmux environment, targeted by its stable SessionID.