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# Error code E0742

Visibility is restricted to a module which isn’t an ancestor of the current item.

Erroneous code example:

    pub mod sea {}

    pub (in crate::sea) struct Shark; // error!

    fn main() {}

To fix this error, we need to move the `Shark` struct inside the `sea` module:

    pub mod sea {
        pub (in crate::sea) struct Shark; // ok!
    }

    fn main() {}

Of course, you can do it as long as the module you’re referring to is an ancestor:

    pub mod earth {
        pub mod sea {
            pub (in crate::earth) struct Shark; // ok!
        }
    }

    fn main() {}