But It's Nothing Serious (Italian: Ma non è una cosa seria) is a 1936 Italian "white-telephones" romantic comedy film directed by Mario Camerini and starring Vittorio De Sica, Elisa Cegani and Assia Noris.

Two years later Camerini remade it as a German film The Man Who Couldn't Say No.

The film's sets were designed by the art director Gastone Medin.

It was shot at the studios of Caesar Film in Rome.

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