Entity Framework generated classes are not in the namespace I require, is there a way of changing the namespace it uses without regenerating?

If I need to regenerate where should the namespace be specified. I am trying to use partial classes from within the Models namespace however they don't match.

The simplified code fragment below is where the entity framework classes have been generated

namespace projectname
{
   #region Contexts

   /// <summary>
  /// No Metadata Documentation available.
  /// </summary>
  public partial class MyClass
  {

  }
}

When I add a class to my models folder,

namespace projectname.Models
{

    public partial class MyClass
    {
     //etc, etc 
    }
}

As you can see the namespaces don't match causing issues when I try and use them as the compiler is seeing both projectname.Models.MyClass and projectname.MyClass.

I would like some advice on the correct way to fix this, preferably to update the E.F. classes so they exist in the projectname.Models namespace, but I am not sure how to go about it.