Accidentally locked myself out from my NAS

[br0kenpixel]

Hello.
I was trying to set up an SFTP bookmark for my NAS. When it asked me to accept the fingerprint or whatever I checked "Always" and accidentally clicked "Decline" and now I'm locked out. How can I fix this? Why is there nothing in the settings to undo stuff like this?

[dkocher]

Delete the corresponding entry from .ssh/known_hosts.

[br0kenpixel]

That worked, thank you!