One vertex darker with lighting

Hi. It’s just me with another lighting problem.
As you can see in the screenshot, my map is made up of a lot of small cubes and one vertex looks darker. Does this look like the normals aren’t calculating correctly?


i can’t see cuz my browser dont allow images. can you plez describe it to me?

Depending on what side you look at the cubes from, one corner is darker. Without lighting, it’s obviously fine.

It points most likely to wrongly defined normals.