Blender import Mesh Collider too small

Hi,

I am creating a level in blender and import it into unity. Everything was fine in the beginning. But I kept on making the level bigger and better… And now the mesh collider is about 1/3 the size of the level-object in unity. I can't use that. What went wrong and how to make the model and the collider the same size in unity? In blender of course both do have the same size because they are the same…

Greetings

 

In case anybody has the same problem and stumbles upon this: it's easy to solve: apply the scale in blender.