diff --git a/src/Umbraco.Web/umbraco.presentation/umbraco/login.aspx.cs b/src/Umbraco.Web/umbraco.presentation/umbraco/login.aspx.cs
index e1847f22a4..36ce464a63 100644
--- a/src/Umbraco.Web/umbraco.presentation/umbraco/login.aspx.cs
+++ b/src/Umbraco.Web/umbraco.presentation/umbraco/login.aspx.cs
@@ -161,14 +161,15 @@ namespace umbraco.cms.presentation
         /// Maps active directory account to umbraco user account
         /// </summary>
         /// <param name="loginName">Name of the login.</param>
+        /// <param name="email">Email address of the user</param>
         private void ActiveDirectoryMapping(string loginName, string email)
         {
             // Password is not copied over because it is stored in active directory for security!
             // The user is create with default access to content and as a writer user type
             if (BusinessLogic.User.getUserId(loginName) == -1)
             {
-                BusinessLogic.User.MakeNew(loginName, loginName, string.Empty, email, BusinessLogic.UserType.GetUserType(2));
-                BusinessLogic.User u = new BusinessLogic.User(loginName);
+                BusinessLogic.User.MakeNew(loginName, loginName, string.Empty, email ?? "", UserType.GetUserType(2));
+                var u = new User(loginName);
                 u.addApplication(Constants.Applications.Content);
             }
         }