Gloc and sprintf?

I am trying to use a combination of gloc and sprintf on my
multilingual website.
If I do this:
<%=sprintf(l(:film_info_minutes),film.duration) %>

I get a compile error:
Translation value “%d minutes” with arguments [] caused error ‘too few
arguments’

but if I do:
<%=sprintf("%d minutes",film.duration) %>

it works fine. Please tell me that its possible to nest gloc with a
sprintf! What am I doing wrong?

Thanks!

Solved it! (embarassing yourself in public is such a good motivator!)

I needed to simply do:
<%=l(:film_info_minutes, film.duration)%>