Russian film director Nikita Mikhalkov on Monday stated that gay marriage was bad for the cinema.

The 67-year-old Mikhalkov, head of the Russian Cinematographers' Union, made his comments during a master class for actors.

“When unnatural things become the norm, what to expect from the cinema?” Mikhalkov is quoted as saying by Interfax. “I am against marriage between members of the same sex. Cinema cannot be healthy and full of energy in a world where same sex marriages are legal.”

Mikhalkov added that the normalization of gay nuptials would lead to the extinction of the human race.

“It is a problem of human self-extinction. I get the impression that it's treated as a joke. I have nothing against gay people, it is a personal choice. But it is the destruction of divine harmony and humanity,” he added.

Mikhalkov's 1994 film Burnt by the Sun won the Grand Prize at Cannes and the Academy Award for Best Foreign Language Film. Last month, he made a red carpet appearance with Brad Pitt, a vocal supporter of marriage equality.