I have an issue with htaccess

I want to use .htaccess to turn a link from /profile?user=username to /profile/username. - I've seen some on here already but they all end up with /username not /profile/username.

I've already tried this code:

RewriteRule ^profile/([^/]+)$ profile.php?user=$1 [L,QSA]

Hope that made sense! Thanks for help :)