1 files changed, 1 insertions, 3 deletions
diff --git a/src/mscorlib/shared/System/NotFiniteNumberException.cs b/src/mscorlib/shared/System/NotFiniteNumberException.cs
index 5bc8df1e28..99882b9eb2 100644
--- a/src/mscorlib/shared/System/NotFiniteNumberException.cs
+++ b/src/mscorlib/shared/System/NotFiniteNumberException.cs
@@ -6,7 +6,6 @@ using System.Runtime.Serialization;
 
 namespace System
 {
-    [Serializable]
     public class NotFiniteNumberException : ArithmeticException
     {
         private double _offendingNumber;
@@ -54,13 +53,12 @@ namespace System
 
         protected NotFiniteNumberException(SerializationInfo info, StreamingContext context) : base(info, context)
         {
-            _offendingNumber = info.GetInt32("OffendingNumber");
+            throw new PlatformNotSupportedException();
         }
 
         public override void GetObjectData(SerializationInfo info, StreamingContext context)
         {
             base.GetObjectData(info, context);
-            info.AddValue("OffendingNumber", _offendingNumber, typeof(Int32));
         }
 
         public double OffendingNumber