Contact Name - First and Last Name

Contact Name - First and Last Name

I've enabled integration between CRM and Desk and so far, this seems to work fine. This syncs contact first and last name in Desk with contact first and last name in CRM.

Problem I am experiencing is that when in DESK a new contact is created on incoming emails, it puts first and last name combined in the last name field. So - if name is John Smith, it creates a record with first name = empty and last name = John Smith. 

This creates a lot of data maintenance which I want to avoid. Is there a setting I am missing to properly align first and last name with the corresponding fields in DESK?

JV