Meta description in Google is not the "site description" in admin setting

[Francois_Douville (François Douville)]

How to display the site description for my site in google?

Here is my site description

Here is what I see in google (private naviguation)

The meta description is my “communautaire” category

[codinghorror (Jeff Atwood)]

You will have to contact Google about that, they decide what to display.