Caolan Lavery says the Owls were frustrated to walk away from the Charlton clash with only one point.
Wednesday went ahead through Lavery before the interval.
The striker extended his good run in the side by converting from Lewis Buxton’s accurate centre against the Addicks.
The forward came agonisingly close to doubling his tally and the Owls’ lead in the second period after rattling the upright from distance.
But ultimately, the Owls were made to pay as Charlton hit back through Johann Berg Gudmundsson.
Lavery said: “It’s definitely frustrating when we can’t go on to get the three points and we know we did enough to win the game.
“For me, it’s been good to get back playing and since my first goal, I’ve started the last few games and that’s given me a lot of confidence.
“I’m working on all aspects of my game and always look to improve. I always give a 100% whether it’s coming off the bench or starting.”
Lloyd Isgrove also hit the woodwork and Atdhe Nuhiu nodded wide from close range to cap a frustrating day at the office.
On his fellow striker, Lavery added: “I can relate to the frustration of Atdhe today.
“You never go out to miss a chance or give the ball away so I feel his pain.
“Everyone is different but Atdhe is a strong character and I’m confident he’ll put the ball in the net with his next chance.”