diff --git a/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.Silverlight.csproj b/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.Silverlight.csproj
index d53fe24b..81b39043 100644
--- a/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.Silverlight.csproj
+++ b/Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.Silverlight.csproj
@@ -131,6 +131,7 @@
     <Compile Include="Linq\JValueTests.cs" />
     <Compile Include="Linq\LinqToJsonTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SilverlightTests.cs" />
     <Compile Include="TestFixtureBase.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/Src/Newtonsoft.Json.Tests/SilverlightTests.cs b/Src/Newtonsoft.Json.Tests/SilverlightTests.cs
new file mode 100644
index 00000000..edce32ee
--- /dev/null
+++ b/Src/Newtonsoft.Json.Tests/SilverlightTests.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Reflection;
+using NUnit.Framework;
+
+namespace Newtonsoft.Json.Tests
+{
+#if SILVERLIGHT
+  [TestFixture]
+  public class SilverlightTests
+  {
+    [Test]
+    public void SystemVersion()
+    {
+      Assembly systemAssembly = typeof(Uri).Assembly;
+      StringAssert.Contains("=2.0.5.0,", systemAssembly.FullName,
+          "Check we're testing a Silverlight 2.0 assembly");
+    }
+  }
+#endif
+}
\ No newline at end of file