I keep getting each night a report that my FTP server is shutdown (unloaded from memory) because it contains a trojan

I am 100% sure that there is nothing wrong with my FTP server deamon, I allready excluded the exe file from the scan list but it keeps unloading it from the memory.

This is the mail I get:

*** Scanning Programs in Computer Memory ***

C:\Program Files\Serv-U\ServUDaemon.exe: Trojan.Servu.1 FOUND
Unloading program C:\Program Files\Serv-U\ServUDaemon.exe from memory

*** Scanned 52 processes - 554 modules ***
*** Computer Memory Scan Completed ***

ServUdeamon.exe is not an virus but my FTP server of my hosted websites, how can I prevent it that wil not be unloaded anymore?

it's a false positive it's should be signaled on
https://cgi.clamav.net/sendvirus.cgi https://cgi.clamav.net/sendvirus.cgi