Steve Bruce felt Hull City were denied a 'clear-cut penalty' during the 1-1 draw against Swansea City at the Liberty Stadium.
Danny Graham ended his 11-month goal drought to give Hull an early lead against his former club before Chico Flores earned Swansea a point when a fizzing cross struck his arm and flew past Allan McGregor on the hour mark.
Though Bruce had no grievance with that decision, he felt referee Martin Atkinson should have awarded his side a spot-kick when Alex Bruce's header hit Dwight Tiendalli's hand.
Regarding Chico's handball, Bruce told Sky Sports: "It's fizzed in and he's turned away from it, and it hits his hand and goes in.
"I can understand that because nobody in the ground can spot that. I've got no grievance there because of the way it has fizzed in, but it does strike his arm and go in the back of the net."
But, when asked about the Tiendalli handball, Bruce said: "Alex gets up well and he's (Tiendalli) practically caught the thing, why not let it hit his chest?
"I'll let everybody else see that, but that's a big decision with 10 minutes to go.
"The referee, who's had a smashing night and reffed particularly well, unfortunately he's missed that. For me, it's a clear-cut penalty with the law the way it is today."
Bruce praised goalscorer Graham, who had not scored in his previous 13 appearances for Hull since his summer loan move from Sunderland.
Graham had also failed to find the net for Sunderland since his January departure from Swansea and it was his first Premier League goal since New Year's Day.
Hull boss Bruce added: "I'm pleased for him. All strikers have it (a drought), even the great ones go through a time in their career.
"It was going well for Danny, who scored 13 goals just after they got promoted and then all of a sudden in the last 12 months, for whatever reason, it hasn't gone so well for the lad.
"The thing you have to do is to keep working hard at it, keep persevering and hope that it'll turn round.
"He's usually one who scores in clutches so I hope he can go on and get us a few more in the next few weeks."