The Bluebirds manager was speaking after seeing his side beaten 2-1 at the City Ground, Robert Earnshaw sinking his former club and pushing Nottingham Forest back into an automatic promotion spot.
Jones, who admitted that Cardiff's equalising penalty had 'looked a bit harsh', nevertheless felt his men should have taken at least a point away from the game.
"It was frustrating," he admitted but added: "We will lick our wounds and get ready to go again on Tuesday."