I've got the rule down to: RewriteRule (;[0-9]*\?)|(;[0-9]*$) / but this is not ideal, as I don't really want to replace the ; with a /, just drop it but can't figure out the syntax for "replace with nothing". You don't, really. You match all the non-version bits of the filename in parens so you have backreferences, and reconstruct the URL without the version bits. Something like this: RewriteRule ^(.*)(;[0-9]+)(.*) $1$3 I don't remember whether the substitution workspace includes script parameters (?var=val). I _think_ that's already been removed. If not, you might need to change the first parenthesized expression to something like ([^?]+) instead. De