diff --git a/evtx.go b/evtx.go
index ca2c216..4fd9a98 100644
--- a/evtx.go
+++ b/evtx.go
@@ -113,6 +113,11 @@ type ChunkHeader struct {
 	FirstEventRecID     uint64
 	LastEventRecID      uint64
 	HeaderSize          uint32
+	LastEventRecOffset  uint32
+	_                   [4]byte
+	EventRecordCheckSum uint32
+	_                   [68]byte
+	CheckSum            uint32
 }
 
 type Chunk struct {