How to install .sys file into c:\windows\system32\drivers with Inno Setup?

18:56 22 Sep 2015

I try to simply install a .sys file into

Source: "C:\myproject\driver.sys"; DestDir: "{win}\system32\drivers";

Once the setup ran, my driver.sys is always installed into

C:\Windows\SysWOW64\drivers

Any idea why?

inno-setup