url is redirecting to subdomain

valb

I have multiple websites running under on one hosting but they each have different domains. I have one that is websitename1.com/photography but when I type in that url it redirects it to its subdomain at websitename1.websitename2.com/photography The content is correct but I definitely don't want anyone to see that as the url. It only seems to be happening with my zenphoto, not any static html pages. Does anyone know if there is something I can do to stop that from happening?