bwp minify and "remove query strings from …"

for those who likes to have a nice pingdom tools or gtmetrix rank – even if you get rid of the scripts and css ( and with Remove Query Strings From Static Resources it works nice) if you use like me bwp-minify it will have that message again on gtmetrix
if you don’t like to have that you have to edit the file in includes folder: class-bwp-minify.php

there you can find /?f= search for it – just get rid of that question mark – it works without too:
so change to: /f=
see here https://gtmetrix.com/reports/guenterweber.com/Vw1p7a7C
on f.e minify javascript – there is no ? anymore