Charlton Athletic manager Guy Luzon has stated that he was "very disappointed" with his side's failure to claim at least a share of the spoils from yesterday's trip to Cardiff City.
The travelling Addicks took the lead just after the break through youngster Karlan Ahearne-Grant, but Joe Mason and Sean Morrison hit back to secure a 2-1 victory for the hosts.
"It's very difficult and we are very disappointed. We were leading 1-0 and we need to show character to keep the result and to keep the clean sheet," Luzon told the club's official website.
"I expect more concentration, more commitment and a different attitude. We can fix that in training and give them the message. But in the end, every game we lead 1-0, we need to keep a clean sheet. That is the base we need to start from."
Charlton will return to action against Fulham at The Valley next Saturday.