diff --git a/td.go b/td.go
index 6b9c280..2fc23ab 100644
--- a/td.go
+++ b/td.go
@@ -299,7 +299,7 @@ func clientMsg(c *tdlib.Client, m TGCommand) {
 		p := tdlib.NewCallbackQueryPayloadData(m.CallbackData)
 		b, _ := json.Marshal(p)
 		log.Printf("CallbackQueryPayloadData :\n%s\n", string(b))
-		d := *p.(tdlib.CallbackQueryPayload)
+		d := *p
 		e := d.(tdlib.CallbackQueryPayload)
 		b, _ = json.Marshal(e)
 		log.Printf("CallbackQueryPayloadData2 :\n%s\n", string(b))