diff --git a/OpenAuth.UnitTest/OpenAuth.UnitTest.csproj b/OpenAuth.UnitTest/OpenAuth.UnitTest.csproj
index 76a6122c..801f8851 100644
--- a/OpenAuth.UnitTest/OpenAuth.UnitTest.csproj
+++ b/OpenAuth.UnitTest/OpenAuth.UnitTest.csproj
@@ -29,7 +29,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
-    <LangVersion>6</LangVersion>
+    <LangVersion>default</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
diff --git a/OpenAuth.UnitTest/TestUnitWork.cs b/OpenAuth.UnitTest/TestUnitWork.cs
index 16b1e4ac..9fc58bee 100644
--- a/OpenAuth.UnitTest/TestUnitWork.cs
+++ b/OpenAuth.UnitTest/TestUnitWork.cs
@@ -1,4 +1,5 @@
-using System.Diagnostics;
+using System;
+using System.Diagnostics;
 using System.Linq;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using OpenAuth.Domain;
@@ -31,7 +32,7 @@ namespace OpenAuth.UnitTest
 
             foreach (var user in usersInOrg)
             {
-                Debug.WriteLine($"{user.Name} :{user.OrgName}");
+                Debug.WriteLine("{0} :{1}", user.Name, user.OrgName);
             }
         }
     }