Scroll of Greater Shadow Conj is wrong

[JubJub]

I found a scroll labeled Greater Shadow Conjuration and it shows as Lvl 5 Wizard. I got the message you already know this spell when I tried to memorize it even though I do not have the spell. That's when I noticed when you right click on the scroll it shows use: Shadow Evocation. So for some reason the Greater Shadow Conj scroll is showing as the Lvl 5 Shadow Evocation spell.