diff --git a/src/Microsoft.AspNet.Identity.EntityFramework/project.json b/src/Microsoft.AspNet.Identity.EntityFramework/project.json
index af7679f2df..6e05ed07f6 100644
--- a/src/Microsoft.AspNet.Identity.EntityFramework/project.json
+++ b/src/Microsoft.AspNet.Identity.EntityFramework/project.json
@@ -10,12 +10,12 @@
     "EntityFramework.Relational": "7.0.0-*"
   },
   "frameworks": {
-    "dnx451": {
+    "net451": {
       "frameworkAssemblies": {
         "System.Threading.Tasks": ""
       }
     },
-    "dnxcore50": {
+    "dotnet5.4": {
       "dependencies": {
         "System.Collections": "4.0.11-beta-*",
         "System.ComponentModel": "4.0.1-beta-*",
@@ -37,4 +37,4 @@
       }
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Identity/UserValidator.cs b/src/Microsoft.AspNet.Identity/UserValidator.cs
index 686e3b92b7..333ca4a23a 100644
--- a/src/Microsoft.AspNet.Identity/UserValidator.cs
+++ b/src/Microsoft.AspNet.Identity/UserValidator.cs
@@ -4,7 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-#if DNX451
+#if NET451
 using System.Net.Mail;
 #endif
 using System.Text.RegularExpressions;
@@ -91,7 +91,7 @@ namespace Microsoft.AspNet.Identity
                 errors.Add(Describer.InvalidEmail(email));
                 return;
             }
-#if DNX451
+#if NET451
             try
             {
                 var m = new MailAddress(email);
diff --git a/src/Microsoft.AspNet.Identity/project.json b/src/Microsoft.AspNet.Identity/project.json
index 2336e1dd80..d9ff9e3820 100644
--- a/src/Microsoft.AspNet.Identity/project.json
+++ b/src/Microsoft.AspNet.Identity/project.json
@@ -8,11 +8,11 @@
   "dependencies": {
     "Microsoft.AspNet.Authentication.Cookies": "1.0.0-*",
     "Microsoft.AspNet.Cryptography.KeyDerivation": "1.0.0-*",
-    "Microsoft.AspNet.Hosting.Abstractions" : "1.0.0-*"
+    "Microsoft.AspNet.Hosting.Abstractions": "1.0.0-*"
   },
   "frameworks": {
-    "dnx451": {},
-    "dnxcore50": {
+    "net451": {},
+    "dotnet5.4": {
       "dependencies": {
         "System.ComponentModel": "4.0.1-beta-*",
         "System.Diagnostics.Debug": "4.0.11-beta-*",
@@ -25,4 +25,4 @@
       }
     }
   }
-}
+}
\ No newline at end of file