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# Error code E0498

#### Note: this error code is no longer emitted by the compiler.

The `plugin` attribute was malformed.

Erroneous code example:

    #![feature(plugin)]
    #![plugin(foo(args))] // error: invalid argument
    #![plugin(bar="test")] // error: invalid argument

The `#[plugin]` attribute should take a single argument: the name of the plugin.

For example, for the plugin `foo`:

    #![feature(plugin)]
    #![plugin(foo)] // ok!

See the `plugin` feature section of the Unstable book for more details.