async Task method that doesn't need to await

I have a group of commands that inherit from a base class. The base class has the following declaration:

public virtual async Task Execute(object parameter){}

Inheriting classes provide an override of this method and not all of them await tasks. In these cases the compiler generates a warning:

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Is it correct to explicitly provide a task complete return value?

public override async Task Execute(object parameter) {
    //code containing no await statements...
    await Task.CompletedTask;
}