Fulham are safe in 10th place with 39 points after victory over QPR.
"We have always been safe, I don't think anyone should worry - we play good football," Berbatov told Sky Sports 1. "I was not nervous, we almost threw the game away, we had a comfortable lead.
"Maybe when they scored their second goal they believed. We held our lead we should score more, but three points is good for us."