1 files changed, 1 insertions, 6 deletions
diff --git a/src/mscorlib/src/System/Reflection/RuntimeFieldInfo.cs b/src/mscorlib/src/System/Reflection/RuntimeFieldInfo.cs
index 29cc97d225..e61c0922d7 100644
--- a/src/mscorlib/src/System/Reflection/RuntimeFieldInfo.cs
+++ b/src/mscorlib/src/System/Reflection/RuntimeFieldInfo.cs
@@ -9,7 +9,6 @@ using RuntimeTypeCache = System.RuntimeType.RuntimeTypeCache;
 
 namespace System.Reflection
 {
-    [Serializable]
     internal abstract class RuntimeFieldInfo : FieldInfo, ISerializable
     {
         #region Private Data Members
@@ -125,11 +124,7 @@ namespace System.Reflection
         #region ISerializable Implementation
         public void GetObjectData(SerializationInfo info, StreamingContext context)
         {
-            if (info == null)
-                throw new ArgumentNullException(nameof(info));
-            Contract.EndContractBlock();
-
-            MemberInfoSerializationHolder.GetSerializationInfo(info, this);
+            throw new PlatformNotSupportedException();
         }
         #endregion
     }