AFP & SMB connected simultaneously

Hi, an annoying problem connecting my MacBook Pro (El Capitan 10.11.1) to a Mac OS X Server (El capitan 10.11.1, with OS X Server app 5.0.15).

A shared drive is mounting twice on my desktop! So I checked the connected users on the server. As you can see, I'm connected with both connections: AFP & SMB. Why my mac connects twice for the same shared drive?

Thanks in advance to anyone who can help me.