diff --git a/Build/build.ps1 b/Build/build.ps1
index e4471539..01d06b12 100644
--- a/Build/build.ps1
+++ b/Build/build.ps1
@@ -17,8 +17,8 @@
   $workingDir = "$baseDir\Working"
   $builds = @(
     @{Name = "Newtonsoft.Json"; TestsName = "Newtonsoft.Json.Tests"; Constants=""; FinalDir="Net40"; NuGetDir = "net40"; Framework="net-4.0"; Sign=$true},
-    #@{Name = "Newtonsoft.Json.Portable"; TestsName = "Newtonsoft.Json.Tests.Portable"; Constants="PORTABLE"; FinalDir="Portable"; NuGetDir = "portable-net40+sl4+wp7+win8"; Framework="net-4.0"; Sign=$true},
-    #@{Name = "Newtonsoft.Json.WinRT"; TestsName = $null; Constants="NETFX_CORE"; FinalDir="WinRT"; NuGetDir = "winrt45"; Framework="net-4.5"; Sign=$true},
+    @{Name = "Newtonsoft.Json.Portable"; TestsName = "Newtonsoft.Json.Tests.Portable"; Constants="PORTABLE"; FinalDir="Portable"; NuGetDir = "portable-net40+sl4+wp7+win8"; Framework="net-4.0"; Sign=$true},
+    @{Name = "Newtonsoft.Json.WinRT"; TestsName = $null; Constants="NETFX_CORE"; FinalDir="WinRT"; NuGetDir = "winrt45"; Framework="net-4.5"; Sign=$true},
     @{Name = "Newtonsoft.Json.WindowsPhone"; TestsName = $null; Constants="SILVERLIGHT;WINDOWS_PHONE"; FinalDir="WindowsPhone"; NuGetDir = "sl3-wp,sl4-windowsphone71"; Framework="net-4.0"; Sign=$true},
     @{Name = "Newtonsoft.Json.Silverlight"; TestsName = "Newtonsoft.Json.Tests.Silverlight"; Constants="SILVERLIGHT"; FinalDir="Silverlight"; NuGetDir = "sl4"; Framework="net-4.0"; Sign=$true},
     @{Name = "Newtonsoft.Json.Net35"; TestsName = "Newtonsoft.Json.Tests.Net35"; Constants="NET35"; FinalDir="Net35"; NuGetDir = "net35"; Framework="net-2.0"; Sign=$true},
diff --git a/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs b/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs
index 9c2a97f8..eca54882 100644
--- a/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs
@@ -376,7 +376,7 @@ namespace Newtonsoft.Json.Tests.Linq
         var obj = JObject.Load(jsonReader);
         var d = (JValue)obj["d"];
 
-        Assert.IsInstanceOfType(typeof(DateTimeOffset), d.Value);
+        CustomAssert.IsInstanceOfType(typeof(DateTimeOffset), d.Value);
         TimeSpan offset = ((DateTimeOffset)d.Value).Offset;
         Assert.AreEqual(TimeSpan.FromHours(1), offset);
 
@@ -394,7 +394,7 @@ namespace Newtonsoft.Json.Tests.Linq
 
       object startDateTime = obj["startDateTime"];
 
-      Assert.IsInstanceOfType(typeof(DateTimeOffset), startDateTime);
+      CustomAssert.IsInstanceOfType(typeof(DateTimeOffset), startDateTime);
     }
 #endif
   }