diff --git a/samples/Mvc.Server/Models/ApplicationDbContext.cs b/samples/Mvc.Server/Models/ApplicationDbContext.cs
index b4733b60..4127fc7c 100644
--- a/samples/Mvc.Server/Models/ApplicationDbContext.cs
+++ b/samples/Mvc.Server/Models/ApplicationDbContext.cs
@@ -3,6 +3,9 @@ using OpenIddict;
 
 namespace Mvc.Server.Models {
     public class ApplicationDbContext : OpenIddictContext<ApplicationUser> {
+        public ApplicationDbContext(DbContextOptions options)
+            : base(options) { }
+
         protected override void OnModelCreating(ModelBuilder builder) {
             base.OnModelCreating(builder);
 
diff --git a/samples/Mvc.Server/Startup.cs b/samples/Mvc.Server/Startup.cs
index 3e2e900d..4997daf6 100644
--- a/samples/Mvc.Server/Startup.cs
+++ b/samples/Mvc.Server/Startup.cs
@@ -6,6 +6,7 @@ using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@@ -39,7 +40,7 @@ namespace Mvc.Server {
             services.AddMvcDnx();
 
             services.AddEntityFramework()
-                .AddSqlServer()
+                .AddEntityFrameworkSqlServer()
                 .AddDbContext<ApplicationDbContext>(options =>
                     options.UseSqlServer(configuration["Data:DefaultConnection:ConnectionString"]));
 
diff --git a/src/OpenIddict.EF/OpenIddictContext.cs b/src/OpenIddict.EF/OpenIddictContext.cs
index a7fee4ab..b80885c0 100644
--- a/src/OpenIddict.EF/OpenIddictContext.cs
+++ b/src/OpenIddict.EF/OpenIddictContext.cs
@@ -7,7 +7,6 @@
 using System;
 using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
 using OpenIddict.Models;
 
 namespace OpenIddict {
@@ -16,43 +15,25 @@ namespace OpenIddict {
         where TApplication : Application<TKey>
         where TRole : IdentityRole<TKey>
         where TKey : IEquatable<TKey> {
-        public OpenIddictContext() { }
+        protected OpenIddictContext() { }
 
         public OpenIddictContext(DbContextOptions options)
             : base(options) { }
 
-        public OpenIddictContext(IServiceProvider services)
-            : base(services) { }
-
-        public OpenIddictContext(IServiceProvider services, DbContextOptions options)
-            : base(services, options) { }
-
         public DbSet<TApplication> Applications { get; set; }
     }
 
     public class OpenIddictContext<TUser> : OpenIddictContext<TUser, Application, IdentityRole, string> where TUser : IdentityUser {
-        public OpenIddictContext() { }
+        protected OpenIddictContext() { }
 
         public OpenIddictContext(DbContextOptions options)
             : base(options) { }
-
-        public OpenIddictContext(IServiceProvider services)
-            : base(services) { }
-
-        public OpenIddictContext(IServiceProvider services, DbContextOptions options)
-            : base(services, options) { }
     }
 
     public class OpenIddictContext : OpenIddictContext<IdentityUser> {
-        public OpenIddictContext() { }
+        protected OpenIddictContext() { }
 
         public OpenIddictContext(DbContextOptions options)
             : base(options) { }
-
-        public OpenIddictContext(IServiceProvider services)
-            : base(services) { }
-
-        public OpenIddictContext(IServiceProvider services, DbContextOptions options)
-            : base(services, options) { }
     }
 }
\ No newline at end of file