[Mono-list] error CS0150: A constant value is expected

[red forks]

The code is:

const TypeByte EmptyTypeByte = TypeByte.Min - 1;

TypeBye is an enum, TypeByte is defined:

 internal enum TypeByte : byte
 {
 Min = Byte,
 Byte = 1,
 SByte = 2,
 Int16 = 3,
 UInt16 = 4,
 Int32 = 5,
 UInt32 = 6,
 Int64 = 7,
 UInt64 = 8,
 Single = 9,
 Double = 10,
 Decimal = 11,
 DateTime = 12,
 Boolean = 13,
 Char = 14,
 String = 15,
 Array = 16,
 BeginOfList = 17,
 ListSeperator = 18,
 EndOfList = 19,
 DBNull = 20,
 Null = 21, // null
 ByteArray = 22, // byte[]
 Guid = 23,
 TinyString = 24,
 ShortString = 25,
 BoolTrue = 26,
 BoolFalse = 27,
 Max = BoolFalse
 }

Don't why? Its ok under Microsoft .Net. Does enum is not constant?
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