diff --git a/message/elements.go b/message/elements.go
index 04d279c0..cfcc7d8b 100644
--- a/message/elements.go
+++ b/message/elements.go
@@ -26,7 +26,8 @@ type GroupImageElement struct {
 }
 
 type GroupVoiceElement struct {
-	Ptt *msg.Ptt
+	Data []byte
+	Ptt  *msg.Ptt
 }
 
 type FriendImageElement struct {