diff --git a/adv.go b/adv.go
index 787ff33..69beb61 100644
--- a/adv.go
+++ b/adv.go
@@ -74,6 +74,7 @@ type Advertisement struct {
 	TxPowerLevel     int
 	Connectable      bool
 	SolicitedService []UUID
+	Raw              []byte
 }
 
 // This is only used in Linux port.
@@ -97,6 +98,8 @@ func (a *Advertisement) unmarshall(b []byte) error {
 			return errors.New("invalid advertise data")
 		}
 		d := b[2 : 1+l]
+		a.Raw = d
+
 		switch t {
 		case typeFlags:
 			// TODO: should we do anything about the discoverability here?