Charlton head for Hillsborough with manager Jose Riga trying to take positives from their 0-0 draw with Bolton at The Valley on Friday.
Riga insists that his team would have won had they not had a strong claim for a penalty rejected and that a clean sheet was praiseworthy against a side with a good recent record.
The Addicks chief also says that his players are showing the tenacity they need to win their fight against relegation.
He said Charlton should have had a penalty for a challenge on Simon Church by Bolton keeper Adam Bogdan.
“It was penalty. The players are working hard and they did their job,” said the Belgian.
““We have four games left to play so this point can be very important. I have to be confident we will stay up.”
“In 12 games Bolton have lost only once and that means something. My team has some resources, physically and mentally. It gives me pleasure.
“They fight, they try to play, they try to get some control.”
“I think this point will be very important,” he added.
Charlton are said to have played well though they were unable to score.
“But to be able to keep a clean sheet and grow in a positive way is the most important thing,” added Riga. “We have to try to keep out of the bottom three.”