Using xfreerdp where gateway credentials are the same as the domain credentials

xfreerdp /u:<username> /p:<password> /d:<domainname> /g:<gateway_hostname> /v:<machinename>:<port> gave me 401 error.

xfreerdp /u:<username> /d:<domainname> /g:<gateway_hostname> /v:<machinename>:<port> /p:<password> worked (I just moved the password to the end).