You're perfectly right, but I already removed it about two years ago along with other artworks I wanted in my Gallery, which was created to gather many of them (as once I thought that photosharing was allowed on DeviantArt, but later found out it isn't).
Usually, I've credited these works without problems until one day some people made me notice that, according to rules, it is recommended to post one's own original creations, as DA has been created for this specific purpose.
I also wrote a Journal Page some time ago to apologize about this issue, since these artworks still appear to be related to me (in particular if you find them through Google searchs); and I've recently stated on a new Page that I'm about to create a dedicated Gallery on another website (probably Photobucket but not sure), including artworks only if permitted and always giving Credits (I forgot to add this latter part on that Page, but I'll clearly write it soon).
I'm sorry for the inconvenience.
But if you know something about how solving it, please inform me as soon as possible and I'll take care. Thanks.