this is very stange, but perhaps you should post it in another Chat...this is for Fans, cooling stuff, etc, not really for icons.
The resonwhy you should post at a right spot is because you are more likely to get a answer faster, and perhaps better one.
Anyway, a mod might move this thread to where it belongs
but i will try to help.
Simply restart your PC, this can really help. If not, post back.
Sometimes the original icon will get deleted or moved for a program and the computer will just put in another one, it's happened to me from time to time (and usually when I know it's time to reformat). The easiest thing would be to uninstall the program and then reinstall...
If I were you I wouldn't worry about it. It's just a rare glitch that happens from time to time. Just read under the Icons, or like koOp said, go to properties and change it.