The sky light is leaking indoors

Development Rendering
1

Hi!

For some reason, sky light is infiltrating my room (which has no windows). All of my rooms are made of 3 different parts: Walls, floor and ceiling.

However, the ceiling is well placed on top of the walls, same for the floor.

http://image.noelshack.com/fichiers/2017/39/2/1506381710-lights.jpg

We can clearly see that the bottom half of the walls are receiving light, and the desk and chairs are casting shadows. This room has no windows so I’m really wondering where the light is coming from.

2

Are your walls single sided?
If so, add some outer geometry. A simple box will do.

3

Yep that fixed my issue, thanks!