Manager Ole Gunnar Solskjaer called on everyone associated with Cardiff to "stick together" after controversial owner Vincent Tan was jeered at the end of Saturday's 3-1 win against Fulham.
Boos echoed around the Cardiff City Stadium when Tan walked onto the pitch to celebrate a vital victory.
The Bluebirds are now only in the Premier League's relegation zone on goal difference with nine games left.
"We've got to stick together to get the points we need," said Solskjaer.
"[Tan] has got the club's best interests at heart all the time. He's very happy today."
In February, the 62-year-old Malaysian businessman said the "vocal minority" who oppose him should "apologise".
At the end of Saturday's game, large numbers made their feelings known when he did the City fans' 'Ayatollah' gesture on the pitch.
Solskjaer said he hoped there were no off-field distractions and called for all non-playing issues to be put aside during the battle to retain top-flight status.
"It would be great to focus on football matters, of course.
"I've had some good chats with [Tan] this week and I think we have to stick together and unite."
Before the game against bottom side Fulham, Solskjaer said it was a "must win" game for both clubs.
Captain Steven Caulker scored two and Sascha Riether scored an own goal as the Bluebirds took all three points.
Solskjaer praised his team but said there was still a lot of work to do for his side to maintain their Premier League status.
"The lads are absolutely fighting and desperate to stay up," he said.
"It's not about one result, it's about a two-month examination.
"We can't relax. We've just got to build on this and go to [Everton] next with the belief that we can nick something.
"It's so tight in the bottom half of the table. It might not have to be 37 points to stay up but that's the aim. If we can get that, I think we are safe."