1 files changed, 4 insertions, 2 deletions
diff --git a/src/mscorlib/shared/System/InvalidTimeZoneException.cs b/src/mscorlib/shared/System/InvalidTimeZoneException.cs
index 8f0751c426..8b300f453d 100644
--- a/src/mscorlib/shared/System/InvalidTimeZoneException.cs
+++ b/src/mscorlib/shared/System/InvalidTimeZoneException.cs
@@ -6,7 +6,6 @@ using System.Runtime.Serialization;
 
 namespace System
 {
-    [Serializable]
     public class InvalidTimeZoneException : Exception
     {
         public InvalidTimeZoneException()
@@ -23,6 +22,9 @@ namespace System
         {
         }
 
-        protected InvalidTimeZoneException(SerializationInfo info, StreamingContext context) : base(info, context) { }
+        protected InvalidTimeZoneException(SerializationInfo info, StreamingContext context) : base(info, context)
+        {
+            throw new PlatformNotSupportedException();
+        }
     }
 }