diff --git a/src/Http/Wolverine.Http.Tests/Bugs/Bug_505_required_attribute_not_working.cs b/src/Http/Wolverine.Http.Tests/Bugs/Bug_505_required_attribute_not_working.cs
new file mode 100644
index 000000000..a85c00dbd
--- /dev/null
+++ b/src/Http/Wolverine.Http.Tests/Bugs/Bug_505_required_attribute_not_working.cs
@@ -0,0 +1,108 @@
+using System.ComponentModel.DataAnnotations;
+using System.Security.Claims;
+using Alba;
+using JasperFx.Core;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using NSubstitute;
+
+namespace Wolverine.Http.Tests.Bugs;
+
+public class Bug_505_required_attribute_not_working
+{
+    [Fact]
+    public async Task try_endpoint_hit()
+    {
+        var breeder = new Breeder();
+        var id = Guid.NewGuid();
+        AggregateRepository.Breeders[id] = breeder;
+
+        var builder = WebApplication.CreateBuilder();
+        builder.Host.UseWolverine();
+        builder.Services.AddSingleton<AggregateRepository>();
+        
+
+        var authorizationService = Substitute.For<IAuthorizationService>();
+        builder.Services.AddSingleton<IAuthorizationService>(authorizationService);
+        var principal = new ClaimsPrincipal();
+
+        authorizationService.AuthorizeAsync(principal, id, "EditBreeder").Returns(AuthorizationResult.Success());
+
+        using var host = await AlbaHost.For(builder, app =>
+        {
+            app.MapWolverineEndpoints();
+        });
+
+        // Hit should be 204, no body
+        await host.Scenario(x =>
+        {
+            x.ConfigureHttpContext(c => c.User = principal);
+            x.Post.Json(new ChangeVisionCommand("good", id)).ToUrl("/api/breeder/change-vision");
+            x.StatusCodeShouldBe(204);
+        });
+        
+        // Miss should 404
+        await host.Scenario(x =>
+        {
+            x.ConfigureHttpContext(c => c.User = principal);
+            var breederId = Guid.NewGuid();
+            authorizationService.AuthorizeAsync(principal, breederId, "EditBreeder")
+                .Returns(AuthorizationResult.Success());
+            
+            x.Post.Json(new ChangeVisionCommand("good", breederId)).ToUrl("/api/breeder/change-vision");
+            x.StatusCodeShouldBe(404);
+        });
+    }
+}
+
+public class Breeder
+{
+    
+}
+
+public class AggregateRepository
+{
+    public static Dictionary<Guid, Breeder> Breeders { get; } = new();
+
+    public Task<T> LoadAsync<T>(Guid breederId, string what, CancellationToken cancellationToken) where T : class
+    {
+        if (Breeders.TryGetValue(breederId, out var breeder))
+        {
+            return Task.FromResult<T>(breeder as T);
+        }
+
+        return Task.FromResult<T>(null);
+    }
+}
+
+public record ChangeVisionCommand(string Vision, Guid BreederId);
+
+public class ChangeBreederVisionEndpoint
+{
+    public static async Task<IResult> Before(ChangeVisionCommand c, ClaimsPrincipal u, IAuthorizationService auth, CancellationToken ct)
+    {
+        var authenticated = await auth.AuthorizeAsync(u, c.BreederId, "EditBreeder");
+        return !authenticated.Succeeded ? Results.Forbid() : WolverineContinue.Result();
+    }
+
+    public static async Task<Breeder?> LoadAsync(ChangeVisionCommand c, AggregateRepository r, CancellationToken ct)
+        => await r.LoadAsync<Breeder>(c.BreederId, null, ct);
+
+    [Tags("Breeder")]
+    [ProducesResponseType(204)]
+    [WolverinePost("/api/breeder/change-vision")]
+    public static  async Task<IResult> Post(ChangeVisionCommand c,[Required] Breeder? breeder, AggregateRepository repo, CancellationToken ct)
+    {
+        if (breeder is null) return Results.NotFound();
+
+        // Don't care for the sake of the test
+        // breeder.ChangeNextPlannedLitter(c.Vision);
+        //
+        // await repo.StoreAsync(breeder, ct);
+        return Results.NoContent();
+    }
+}
\ No newline at end of file
diff --git a/src/Http/Wolverine.Http/HttpChain.Codegen.cs b/src/Http/Wolverine.Http/HttpChain.Codegen.cs
index 784eac08e..b2d7c87a1 100644
--- a/src/Http/Wolverine.Http/HttpChain.Codegen.cs
+++ b/src/Http/Wolverine.Http/HttpChain.Codegen.cs
@@ -52,6 +52,8 @@ bool ICodeFile.AttachTypesSynchronously(GenerationRules rules, Assembly assembly
         {
             return false;
         }
+        
+        Debug.WriteLine(_generatedType?.SourceCode);
 
         return true;
     }
diff --git a/src/Http/Wolverine.Http/Policies/RequiredEntityPolicy.cs b/src/Http/Wolverine.Http/Policies/RequiredEntityPolicy.cs
index bbae51449..e78a46f8d 100644
--- a/src/Http/Wolverine.Http/Policies/RequiredEntityPolicy.cs
+++ b/src/Http/Wolverine.Http/Policies/RequiredEntityPolicy.cs
@@ -14,20 +14,17 @@ public void Apply(IReadOnlyList<HttpChain> chains, GenerationRules rules, IConta
     {
         foreach (var chain in chains)
         {
-            if (chain.RoutePattern.Parameters.Any())
+            var requiredParameters = chain.Method.Method.GetParameters()
+                .Where(x => x.HasAttribute<RequiredAttribute>() && x.ParameterType.IsClass).ToArray();
+
+            if (requiredParameters.Any())
             {
-                var requiredParameters = chain.Method.Method.GetParameters()
-                    .Where(x => x.HasAttribute<RequiredAttribute>() && x.ParameterType.IsClass).ToArray();
+                chain.Metadata.Produces(404);
 
-                if (requiredParameters.Any())
+                foreach (var parameter in requiredParameters)
                 {
-                    chain.Metadata.Produces(404);
-
-                    foreach (var parameter in requiredParameters)
-                    {
-                        var frame = new SetStatusCodeAndReturnFrame(parameter.ParameterType);
-                        chain.Middleware.Add(frame);
-                    }
+                    var frame = new SetStatusCodeAndReturnFrame(parameter.ParameterType);
+                    chain.Middleware.Add(frame);
                 }
             }
         }