1 files changed, 1 insertions, 6 deletions
diff --git a/src/mscorlib/src/System/Reflection/RuntimeEventInfo.cs b/src/mscorlib/src/System/Reflection/RuntimeEventInfo.cs
index 930e1820bd..9e86867b6d 100644
--- a/src/mscorlib/src/System/Reflection/RuntimeEventInfo.cs
+++ b/src/mscorlib/src/System/Reflection/RuntimeEventInfo.cs
@@ -10,7 +10,6 @@ using RuntimeTypeCache = System.RuntimeType.RuntimeTypeCache;
 
 namespace System.Reflection
 {
-    [Serializable]
     internal unsafe sealed class RuntimeEventInfo : EventInfo, ISerializable
     {
         #region Private Data Members
@@ -159,11 +158,7 @@ namespace System.Reflection
         #region ISerializable
         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