diff --git a/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs b/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs
index ba7b567a..d1a08f81 100644
--- a/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Linq/JValueTests.cs
@@ -398,6 +398,7 @@ namespace Newtonsoft.Json.Tests.Linq
     }
 #endif
 
+#if !NETFX_CORE
     [Test]
     public void ConvertsToBoolean()
     {
@@ -537,5 +538,6 @@ namespace Newtonsoft.Json.Tests.Linq
 
       Assert.AreEqual(TypeCode.Object, v.GetTypeCode());
     }
+#endif
   }
 }
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs b/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
index 952b74b7..018794db 100644
--- a/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
+++ b/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
@@ -4904,7 +4904,7 @@ To fix this error either change the environment to be fully trusted, change the
       JsonConvert.DeserializeObject<EnumerableArrayPropertyClass>(json);
     }
 
-#if !NET20
+#if !(NET20 || SILVERLIGHT)
     [DataContract]
     public class BaseDataContract
     {
diff --git a/Src/Newtonsoft.Json/Linq/JValue.cs b/Src/Newtonsoft.Json/Linq/JValue.cs
index 60d3b32d..00b82ffa 100644
--- a/Src/Newtonsoft.Json/Linq/JValue.cs
+++ b/Src/Newtonsoft.Json/Linq/JValue.cs
@@ -37,7 +37,10 @@ namespace Newtonsoft.Json.Linq
   /// <summary>
   /// Represents a value in JSON (string, integer, date, etc).
   /// </summary>
-  public class JValue : JToken, IEquatable<JValue>, IFormattable, IComparable, IComparable<JValue>, IConvertible
+  public class JValue : JToken, IEquatable<JValue>, IFormattable, IComparable, IComparable<JValue>
+#if !(NETFX_CORE)    
+    , IConvertible
+#endif
   {
     private JTokenType _valueType;
     private object _value;
@@ -831,6 +834,7 @@ namespace Newtonsoft.Json.Linq
       return Compare(_valueType, _value, obj._value);
     }
 
+#if !(NETFX_CORE)    
     TypeCode IConvertible.GetTypeCode()
     {
       if (_value == null)
@@ -918,5 +922,6 @@ namespace Newtonsoft.Json.Linq
     {
       return Convert.ChangeType(_value, conversionType, provider);
     }
+#endif
   }
 }
\ No newline at end of file