diff --git a/td.go b/td.go
index 4335d57..c10d514 100644
--- a/td.go
+++ b/td.go
@@ -296,7 +296,7 @@ func clientMsg(c *tdlib.Client, m TGCommand) {
 		}
 	case commandCallback:
 		d := tdlib.NewCallbackQueryPayloadData(m.CallbackData)
-		a, err := c.GetCallbackQueryAnswer(m.FromChatID64, m.FromMsgID64, tdlib.CallbackQueryPayload(d))
+		_, err := c.GetCallbackQueryAnswer(m.FromChatID64, m.FromMsgID64, tdlib.CallbackQueryPayload(d))
 		logOnError(err, "clientMsg : GetCallbackQueryAnswer")
 	default:
 		log.Printf("clientMsg : No handler for command %d.\n", m.Type)