Brendan Fraser revealed the miserable side of his career comeback, saying Thursday he still waits to be called a fraud.

Fraser just earned an Oscar nomination for playing an obese teacher who tries to reconcile with his daughter in The Whale .

But the actor who built his original rush of fame on the Mummy franchise cant seem to fully enjoy his showbiz reawakening. Even landing a role in Martin Scorseses Killers of the Flower Moon with Robert De Niro and Leonardo DiCaprio doesnt totally stoke his sense of validation.

Asked by culture website NME if this his time, he said:

Im never gonna get that comfortable. And when I do that, I think its time to rethink my approach, because Im always ... I cant get rid of the feeling that someones gonna walk in the room and tell me that Im a fraud, or that I have impostor syndrome. Theyre gonna hand me a dish-towel and Ill have to go get back to work. But I hope I never lose that. In a way. Because Im still not done proving myself yet. And to do that, I need bigger and greater challenges.

Fraser reveled in critics embrace at the Toronto and Venice film festivals, and recently collected a Critics Choice Award for best actor .

We all approached this piece as if it were the first and last time we would ever have a chance to do this kind of work ever again, each day, and I think that this movie can help do a lot of good, he said in his acceptance speech.