diff --git a/SabreTools.Library/Data/Constants.cs b/SabreTools.Library/Data/Constants.cs
index 5f674387..85df7db6 100644
--- a/SabreTools.Library/Data/Constants.cs
+++ b/SabreTools.Library/Data/Constants.cs
@@ -513,6 +513,7 @@ namespace SabreTools.Library.Data
 		public static readonly byte[] LZ4Signature =				{ 0x18, 0x4d, 0x22, 0x04 };
 		public static readonly byte[] LZ4SkippableMinSignature =	{ 0x18, 0x4d, 0x22, 0x04 };
 		public static readonly byte[] LZ4SkippableMaxSignature =	{ 0x18, 0x4d, 0x2a, 0x5f };
+		public static readonly byte[] PESignature =					{ 0x4d, 0x5a };
 		public static readonly byte[] RarSignature =				{ 0x52, 0x61, 0x72, 0x21, 0x1a, 0x07, 0x00 };
 		public static readonly byte[] RarFiveSignature =			{ 0x52, 0x61, 0x72, 0x21, 0x1a, 0x07, 0x01, 0x00 };
 		public static readonly byte[] TarSignature =				{ 0x75, 0x73, 0x74, 0x61, 0x72, 0x20, 0x20, 0x00 };