diff --git a/src/Microsoft.AspNet.Mvc.DataAnnotations/DataTypeAttributeAdapter.cs b/src/Microsoft.AspNet.Mvc.DataAnnotations/DataTypeAttributeAdapter.cs
index 5386156b7d..f815135b29 100644
--- a/src/Microsoft.AspNet.Mvc.DataAnnotations/DataTypeAttributeAdapter.cs
+++ b/src/Microsoft.AspNet.Mvc.DataAnnotations/DataTypeAttributeAdapter.cs
@@ -19,15 +19,11 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Validation
             string ruleName)
             : base(attribute)
         {
-            if (ruleName == null)
-            {
-                throw new ArgumentNullException(nameof(ruleName));
-            }
-
             if (string.IsNullOrEmpty(ruleName))
             {
                 throw new ArgumentException(Resources.ArgumentCannotBeNullOrEmpty, nameof(ruleName));
             }
+
             RuleName = ruleName;
         }
 
diff --git a/src/Microsoft.AspNet.Mvc.DataAnnotations/DefaultClientModelValidatorProvider.cs b/src/Microsoft.AspNet.Mvc.DataAnnotations/DefaultClientModelValidatorProvider.cs
index b05e8d7047..8cb1c3f87f 100644
--- a/src/Microsoft.AspNet.Mvc.DataAnnotations/DefaultClientModelValidatorProvider.cs
+++ b/src/Microsoft.AspNet.Mvc.DataAnnotations/DefaultClientModelValidatorProvider.cs
@@ -2,8 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 namespace Microsoft.AspNet.Mvc.ModelBinding.Validation
 {