--- tools/minifycss
+++ tools/minifycss
@@ -2,7 +2,7 @@
 BEGIN {
   unshift @INC, $ENV{FOSWIKICPAN} if defined $ENV{FOSWIKICPAN};
 }
-use CSS::Minifier qw(minify);
+use CSS::Minifier::XS qw(minify);
 
 foreach my $file (@ARGV) {
   open(INFILE, $file) or die "failed opening $file";