[Koha] Installation Mistake

Hi, I was installing Koha 1.9.0 and I made a mistake on step 3 of the Quick Installation Guide. I forgot to include the user and password. The command should be (mysql -uusername -ppassword Koha < koha.mysql) I forgot to include the -uusername and -ppassword. It accept the command but how can I correct my mistake? Thanks. Liza