Go to your member page and find the game in your game history. Click on "delete game" - enter your password and delete. Now you can go back to "report game" and enter the right game result.
"Most sorts of diversion in men, children, and other animals, are in imitation of fighting." - Jonathan Swift
Your mistaken,DK :)
He's not talking about a regular game report-in which case you'd be correct,but about a h2h game report.
The incorrect report is now gone,Elltee