Jones' blunder gifted Brighton their opening goal in last weekend's 1-1 draw but the 20-year-old will keep his place.
Williams once again has the luxury of a fully-fit squad to choose from with his players having had a full week to recover from any niggles picked up against the Seagulls.
French striker Jonathan Tehoue got another 45 minutes under his belt for the reserves in midweek but will have to settle for a place on the bench again.
Top scorer Scott McGleish, who hit his 11th goal of the season against Brighton, will be partnered by Ryan Jarvis in attack.
