diff --git a/client.go b/client.go
index 48c7da2..50d17e3 100644
--- a/client.go
+++ b/client.go
@@ -16,7 +16,7 @@ func clientSendCWMsg(userID64 int64, s string) {
 
 func clientMsgMeAck(m *ChatWarsMessageMeAck) {
 	if _, ok := clientsQueue[m.Msg.UserID64]; ok {
-		if v, ok := clientsCW[m.Msg.UserID64]; ok {
+		if v, ok := clientsCW.Load(m.Msg.UserID64); ok {
 			c := v.(*ChatWarsClient)
 			if c.LastUpdate.Before(m.Msg.Date) {
 				c.GuildID64 = m.GuildID64