Norman Antivirus kills Portable ClamAV

I'm running Norman Antivirus Control (NVC) as virus scanner. When I extracted the Portable ClamAV (ClamWin_Portable_0.88.4.exe) to my harddrive, NVC detected malware inside the PortableClamAV.exe.

You can find a screenshot here:
http://the.pla.ce2.be/_pics/projecten/portablesuite/clamwin-killd-by-nor...

Translation of the (Dutch) text inside the image:
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Norman Virus Control has found a trojan and placed it in quarantine.

Location: S:\......\ClamWinPortable\ClamWinPortab.exe
Trojan: Zlob.APB
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I'm really sure that it's the correct version, downloaded from SF.