Unbounce integration creating duplicates in CRM

Unbounce integration creating duplicates in CRM

Hello! 

Is anyone else using the Unbounce integration with Zoho CRM, and if so is there a way around Unbounce creating duplicate leads in Zoho CRM? 

For example, if someone downloads two e-books via an Unbounce landing page, they become two leads in Zoho CRM. Is there a way around this?

Thanks in advance!