die "Package $package ($modpname.pm) does not match filename $filename"
unless ($filename =~ m/\Q$modpname.pm\E$/ or
- ($^O eq "msdos") or
+ ($^O eq "msdos") or ($^O eq 'MSWin32') or
$Is_VMS && $filename =~ m/$modpname.pm/i);
my($al_idx_file) = "$autodir/$modpname/$IndexFile";