rsync appends .exe extension

[Peter]

Hi
I copying files from a linux station to a win32 - cygwin 1.7 station 
using the current openssh server from cygwin

I run:
rsync -rpogv . -e "ssh" host:/

This works, except that for some binaries ( I could not determine any 
pattern or rule )  ending with .exe .src or .sys  , cygwin  adds .exe 
extensions ( yielding files  like .sys.exe ).
Is this normal behavior ? If yes, can it be disabled ?

( Note : that if this cannot be enabled, I think it renders rsync - 
cygwin more or less useless for a couple of mirroring tasks )

Thanks for your ideas
Peter

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