Mark Robins has been forced to make one change to the side that beat Wycombe 3-2 at the Ricoh Arena on Friday.
Peter Vincenti, who was substituted with a knee injury in the victory, has not travelled with the matchday squad and is replaced by Tom Davies for the Sky Blues.
Davies slot into the usual defence of Jack Grimmer, Jordan Willis, Rod McDonald and Chris Stokes as Coventry revert back to a five in defence.
Marc McNulty and Max Biamou keep their place upfront for City with Jordan Shipley, Tom Bayliss and captan Michael Doyle completing the midfield.
Lee Burge keeps his place in goal.
Coventry City XI: Burge (GK), Willis, Davies, McDonald, Stokes, Grimmer, Doyle (C), Bayliss, Shipley, McNulty, Biamou.
Subs: O'Brien (GK), Haynes, Stevenson, Maycock, Beavon, Nzaon, Ponticelli.
Port Vale XI: Boot (GK), Davis, Kay, Smith, Pugh, Tongue, Gunning, Harness, Whitfield, Pope, Barnett.
Subs: Lainton (GK), Denton, Montano, Forrester, Turner, Kelly, De Freitas.