Title of posts when sharing on FB

Replies: 0

Hi there,

When sharing a post on FB the title of the post gets automatically the name of my site in the beginning, followed by a comma and then the title of the post.

EX: mysite, The title of the post

Where is that name of my site + comma defined please?
In my case, it doesn’t correspond exactly to the full site’s name in WP settings and it’s maybe set somewhere at Yoast, but I also don’t know where that comma comes from, as it’s not correct.

Thanks.