Redirection issue logging in to OWA

I'm having a redirection issue logging into OWA. This is a Exchange 2007 SP3 environment and Exchange 2013. I migrated the administrator user's mailbox to Exchange 2013 and I can login to ECP okay. However when I try to login to OWA, it redirects me to the Exchange 2007 OWA. When I try to login there, it gives me a message that I should login to the URL for Exchange 2013's OWA.

Any ideas? TIA.