False positive for viruses

Hello,

I use NSIS for my plugins but lately I got some complaints of this sort.

I'll attach my script below. I am not very into NSIS really so have I added something bad in there which is causing this? Or are people just using lame ass virus checkers?

Thanks,
Joonas

thought it's in the faq, but couldn't find it. however, it's been posted multiple times, also have a look at this.