Stefan Kiessling's header found its way into the back of the net through a hole in the side-netting when Leverkusen won 2-1 in Sinsheim.
Hoffenheim's appeal against the result was dismissed by the German Football League (DFL), and with that ruling Hyypia says the issue was finished with.
"It seems still to be something people like to talk about, but we've not mentioned it this week," Hyypia said at a press conference.
"I don't think it's going to be on (Kiessling's) mind either."
What will be on the German striker's mind is scoring a goal which nobody can dispute, and earning his side all three points.
"It's important that we win," said Hyypia, whose side have not done so in their last eight. "We need that to get some self-confidence for Wednesday."
Leverkusen face Augsburg in midweek before hosting Eintracht Braunschweig and they need to bring an end to their winless streak sooner rather than later having slipped to fourth recently.
Their place in the Champions League next season is coming under threat from the likes of Mainz, Borussia Monchengladbach, Wolfsburg and Augsburg.
Kiessling's phantom goal does still rankle somewhat with Hoffenheim, who will be hoping to do some justice of their own at the BayArena.
"It was a strange game," recalled coach Markus Gisdol. "We could have won it and that's bound to remain a unique incident in the history of the Bundesliga.
"It was a pretty uncomfortable situation to deal with and get through.
"Of course we still have it in the back of our minds, because it was so defining and it would be nice if we could succeed in ironing it out."
Neither side have any injury or suspension problems, allowing the coaches to field their strongest starting XIs on Sunday.