diff --git a/dmx.go b/dmx.go
index 267ea14..6336edc 100644
--- a/dmx.go
+++ b/dmx.go
@@ -48,7 +48,9 @@ func (ad *ArtDmx) UnmarshalBinary(data []byte) error {
 		return errors.New("ArtDmx packet must be at least 18 bytes long")
 	}
 
-	if !slices.Equal(ArtNetID, data[0:8]) {
+	ad.ID = data[0:8]
+
+	if !slices.Equal(ArtNetID, ad.ID) {
 		return errors.New("ID does not match Art-Net ID")
 	}
 
diff --git a/poll.go b/poll.go
index 9bb64a3..ebfcce5 100644
--- a/poll.go
+++ b/poll.go
@@ -53,7 +53,9 @@ func (ap *ArtPoll) UnmarshalBinary(data []byte) error {
 		return errors.New("ArtPoll packet must be at least 14 bytes long")
 	}
 
-	if !slices.Equal(ArtNetID, data[0:8]) {
+	ap.ID = data[0:8]
+
+	if !slices.Equal(ArtNetID, ap.ID) {
 		return errors.New("ID does not match Art-Net ID")
 	}