This is a generic detection and there we have to weigh a couple of factors to come to a conclusive decision,
“fp or not fp and that is the tricky question” to pose the Shakespearean dilemma here.
There are some evaluation points to help us.

Here a number of attributes that FileRep detection may consider:
File changes (Emergence)
Number of times that file has been executed so far (Prevalence)
Spreading of the file
Source URI
Status of digital signatures

So unsigned files would make the detection more likely in this respect.
Then there is the packer and protection issue that makes the Delphi detections complicated and false positive prone.
The best action here is reactive and to report the likely false positive,
Some answers can be found through scanning these files here: http://anubis.iseclab.org/?action=home

There are several reasons why an Anti Virus product might trigger on a Delphi produced exe, a few common reasons are:

Lots of viruses are written in Delphi and therefore your exe might have some code parts that look the same as existing viruses.
The import table of your program is used to determine what your exe might do, for instance linking to Credentials Management or Disk Management functions triggers some AV’s.
As suggested before try scanning your release version with online services such as Virustotal or Jotti and always report your false positives to vendors instead of trying to prevent being a false positive. My experience is that AV vendors react quite fast on submission.


Quote info credits go to Remco Weijnen posting on StackOverflow Q&A

polonus