Dovecot not changing SSL key and certificate as in config file

I am trying to use my (decrypted) SSL key and certificate in Dovecot. I have changed /etc/dovecot/conf.d/10-ssl.conf like so: ssl_cert =

However, after running service dovecot restart, dovecot -n still says that the files /etc/dovecot/dovecot.pem and /etc/dovecot/private/dovecot.pem are being used. I am using dovecot 2.2.9, any help would be greatly appreciated.