diff --git a/test/Shared/UserManagerTestBase.cs b/test/Shared/UserManagerTestBase.cs
index d2650e1a76..a45e966b14 100644
--- a/test/Shared/UserManagerTestBase.cs
+++ b/test/Shared/UserManagerTestBase.cs
@@ -318,7 +318,7 @@ namespace Microsoft.AspNetCore.Identity.Test
             IdentityResultAssert.IsFailure(await manager.CreateAsync(user), _errorDescriber.InvalidEmail(email));
         }
 
-#if DNX451
+#if NET451
         [Theory]
         [InlineData("@@afd")]
         [InlineData("bogus")]