Imported Upstream version 2.0.0.11992upstream/2.0.0.11992

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mscorlib/shared/System/Threading/Tasks/TaskSchedulerException.cs b/src/mscorlib/shared/System/Threading/Tasks/TaskSchedulerException.cs
index 148b6300ef..2888415d0d 100644
--- a/src/mscorlib/shared/System/Threading/Tasks/TaskSchedulerException.cs
+++ b/src/mscorlib/shared/System/Threading/Tasks/TaskSchedulerException.cs
@@ -20,7 +20,6 @@ namespace System.Threading.Tasks
     /// Represents an exception used to communicate an invalid operation by a
     /// <see cref="T:System.Threading.Tasks.TaskScheduler"/>.
     /// </summary>
-    [Serializable]
     public class TaskSchedulerException : Exception
     {
         /// <summary>
@@ -72,6 +71,7 @@ namespace System.Threading.Tasks
         protected TaskSchedulerException(SerializationInfo info, StreamingContext context)
             : base(info, context)
         {
+            throw new PlatformNotSupportedException();
         }
     }
 }