How to get border to edge or very close?

Testing out this asset, I require to be able to get to the walls of a room, but the recast nav mesh stops long before. What do I tweak to get the edges close to the edge of the tile?

Hi

The navmesh is defined as all positions where the center of the character is allowed to be. Therefore, it is shrunk by the agent’s radius. You can adjust this with the recast graph → agent diameter setting.

That worked, thank you!