Pidgin showing 2 lines on each message

[r7l]

I am using this line to send messages out. It works nice but Pidgin always shows 2 lines per message and it does this only with sendxmpp. Is there any way to prevent this?

echo "Custom Message" | sendxmpp -a /etc/ssl/certs -t -f /etc/sendxmpp.conf user@domain.com