diff --git a/src/Microsoft.AspNet.AppBuilderSupport/AppBuilderSupportExtensions.cs b/src/Microsoft.AspNet.AppBuilderSupport/AppBuilderSupportExtensions.cs
index d434c85b97..dfb66eb492 100644
--- a/src/Microsoft.AspNet.AppBuilderSupport/AppBuilderSupportExtensions.cs
+++ b/src/Microsoft.AspNet.AppBuilderSupport/AppBuilderSupportExtensions.cs
@@ -16,7 +16,7 @@ namespace Owin
     {
         public static IAppBuilder UseBuilder(this IAppBuilder appBuilder, Action<IBuilder> configuration)
         {
-            IBuilder builder = new Builder();
+            IBuilder builder = new Builder(null);
             configuration(builder);
             Func<AppFunc,AppFunc> middleware1 = next1 => {
                 Func<RequestDelegate,RequestDelegate> middleware2 = next2 => {
diff --git a/test/Microsoft.AspNet.PipelineCore.Tests/BuilderTests.cs b/test/Microsoft.AspNet.PipelineCore.Tests/BuilderTests.cs
index 3dfc4278d8..4541585c1d 100644
--- a/test/Microsoft.AspNet.PipelineCore.Tests/BuilderTests.cs
+++ b/test/Microsoft.AspNet.PipelineCore.Tests/BuilderTests.cs
@@ -8,7 +8,7 @@ namespace Microsoft.AspNet.PipelineCore.Tests
         [Fact]
         public void BuildReturnsCallableDelegate()
         {
-            var builder = new Builder();
+            var builder = new Builder(null);
             var app = builder.Build();
 
             var mockHttpContext = new Moq.Mock<HttpContext>();