First thought: That doesn't sound right. I believe that you would need a 16 bit compiler to make a 16 bit application. However, that's a guess on my part.

Second thought: What makes you think that it's a 16 bit application? Personally, I wouldn't have a clue on how to check if an application is a 16, 32, or 64 bit application.

Third thought: If it works and you're able to use it, does it really matter if it is a 16 bit application? Not trying to sound harsh, but I'm just not seeing what the concern here is.