diff --git a/internal/decoders/data_packet_chunk.go b/internal/decoders/data_packet_chunk.go
index effc86f..9e2dfbf 100644
--- a/internal/decoders/data_packet_chunk.go
+++ b/internal/decoders/data_packet_chunk.go
@@ -44,7 +44,7 @@ func decodeDataPacketChunkData(dataPacketChunk Chunk) DataPacketChunkData {
 
 type DataPacketChunk struct {
 	Chunk Chunk
-	Data  DataPacketChunkData `json:"data"`
+	Data  DataPacketChunkData
 }
 
 func DecodeDataPacketChunk(bytes []byte) DataPacketChunk {
diff --git a/tracker.go b/tracker.go
index 6c4168f..433ba86 100644
--- a/tracker.go
+++ b/tracker.go
@@ -6,9 +6,9 @@ import (
 )
 
 type XYZData struct {
-	X float32 `json:"x"`
-	Y float32 `json:"y"`
-	Z float32 `json:"z"`
+	X float32
+	Y float32
+	Z float32
 }
 
 type Tracker struct {