EF Designer Database first forces mapping to plural named tables - asp.net-mvc

Question

I am doing Entity Frameworks Database first approach, using EF 5.0, visual studio 2012 and Sql server management studio. Both Vs and ssms are express version.
I have several tables named ex. "User" or "Product", but when autogenerating the table mapping between an entity and a table, EF insists on mapping "User" to dbo.Users and "Product" to dbo.Products.
I have tried setting tools->options->databasedesigner->O/R designer->Pluralization of names to false.
When working with the *.edmx file in the EF designer in VS2012, I have also tried to set "Pluralize New Objects" to false.
In the EF Designer it correctly shows that "User" maps to the "User" table, but when I inspect my dbcontext object in debugging mode during runtime and finds the sql it uses to access the tables it access dbo.Users.
If I were using Code first approach this seems to be fixable by "modelBuilder.Conventions.Remove();" in the ModelBuilder, but how is this problem solved using the Database first approach?
I should probably say that I use a IDbcontext for testing purpose
using System.Data.Entity.Infrastructure;
namespace XX.Core
{
public interface IDbContext : IDisposable
{
IQueryable<T> Query<T>() where T : class;
void Add<T>(T entity) where T : class;
void Delete<T>(T entity) where T : class;
void Update<T>(T entity) where T : class;
Boolean Any<T>() where T : class;
int SaveChanges();
void Dispose();
}
}
and my actual dbcontext when not testing
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Entity;
namespace XX.Core.Model
{
public class XXDb : DbContext, IDbContext
{
public XXDb()
: base("name=XX")
{
}
public DbSet<User> Users { get; set; }
public DbSet<YY> Products { get; set; }
public DbSet<Offer> YY { get; set; }
public DbSet<ZZ> ZZ { get; set; }
IQueryable<T> IDbContext.Query<T>()
{
return Set<T>();
}
void IDbContext.Add<T>(T entity)
{
Set<T>().Add(entity);
}
void IDbContext.Delete<T>(T entity)
{
Set<T>().Remove(entity);
}
void IDbContext.Update<T>(T entity)
{
Set<T>().Attach(entity);
SaveChanges();
}
Boolean IDbContext.Any<T>()
{
return Set<T>().Any();
}
}
}