How to redo corridor?

[Sir Jingles]

I accidently destroyed 3 tiles instead of 2 when building a corridor, so now i cant place a door to my new room. Is there anyway to erase the corridor or maybe fill the tiles with earth again?

[Sagi]

i tought it had something to do with placing doors.
but you can only destroy rooms wich don't connect to another room wich would be inaccasible after destruction. If you have a long corridor and you place a door in the middle , then to the middle will the corridor be destroyed. ps it is a buggy thing be prepared for a crash

[Rogue]

If the corridor is 3 spaces wide there is no way to destroy it. (filling it in)

If you can block the whole area off by placing a door in another corridor then you'll be able to destroy it and start over.

[expendablejim]

You can destroy a room by right clicking on it and clicking the wrecking ball icon.

However, some items will prevent you doing this, such as loot, bodybags, gold (you can't destroy your last strongroom). I think fire extinguishers may also be on the list if the extinguisher is being used. When this happens you won't see an icon. So clear everything out of the corridor and try again.

You can destroy a room even if it would render another room inaccessible, although agents will start tunnelling into it.