diff --git a/workers.go b/workers.go
index b89f3f4..54debf8 100644
--- a/workers.go
+++ b/workers.go
@@ -459,7 +459,7 @@ func SQLIdentifyMsgWorker(id int, objIds <-chan int64) {
 					_, err := fromChatWarsDate(rule.re.ReplaceAllString(m.Text, "${Day}") + " " + rule.re.ReplaceAllString(m.Text, "${Month}") + " " + rule.re.ReplaceAllString(m.Text, "${Year}") + " " + rule.re.ReplaceAllString(m.Text, "${Hour}") + ":" + rule.re.ReplaceAllString(m.Text, "${Minute}"))
 					logOnError(err, "SQLIdentifyMsgWorker["+strconv.Itoa(id)+"] : fromChatWarsDate")
 				case objSubTypeMessageOrderbookAck:
-					cwm, err := parseSubTypeMessageOrderbookAck(m, rule.re)
+					_, err := parseSubTypeMessageOrderbookAck(m, rule.re)
 					logOnError(err, "SQLIdentifyMsgWorker["+strconv.Itoa(id)+"] : Parsing objSubTypeMessageOrderbookAck.")
 
 				default: