Royals boss Veljko Paunovic makes one change to the side that battled past Barnsley last weekend, handing Yakou Meite his first start of the season.
Meite was suspended for the first three games of the season and came off the bench to score the opener against the Tykes at the Madejski last Saturday - and today he starts in place of John Swift.
Andy Yiadom remains absent with kis knee injury so Felipe Araruna continues at right-back.
New signing Lewis Gibson however is added to the squad, taking a place on the substitutes bench this afternoon.
Two former Royals start for City, Leandro Bacuna and Sean Morrison are named in Neil Harris' side this afternoon.
Cardiff City: Smithies, Osei-Tutu, Morrison (c), Vaulks, Bacuna, Nelson, Cunningham, Pack, Ojo, Hoilett, Moore.
Subs: Day, Glatzel, Murphy, Tomlin, Whyte, Bamba, Bagan.
Reading: Rafael, Araruna, Richards, Moore, Morrison, Rinomhota, Laurent, Olise, Ejaria, Meite, Joao.
Subs: Southwood, McIntyre, Holmes, Gibson, Baldock, Aluko, Puscas.
