diff --git a/td.go b/td.go
index 1be6259..122eda2 100644
--- a/td.go
+++ b/td.go
@@ -296,8 +296,9 @@ func clientMsg(c *tdlib.Client, m TGCommand) {
 			MQCWMsgQueue <- r
 		}
 	case commandCallback:
-		p := tdlib.NewCallbackQueryPayloadData(m.CallbackData)
-		a, err := c.GetCallbackQueryAnswer(m.FromChatID64, m.FromMsgID64, *p.(tdlib.CallbackQueryPayload))
+		d := tdlib.NewCallbackQueryPayloadData(m.CallbackData)
+		p := d.(tdlib.CallbackQueryPayload)
+		a, err := c.GetCallbackQueryAnswer(m.FromChatID64, m.FromMsgID64, p)
 		logOnError(err, "clientMsg : GetCallbackQueryAnswer")
 		b, _ := json.Marshal(a)
 		log.Printf("GetCallbackQueryAnswer :\n%s\n", string(b))