diff --git a/main.go b/main.go
index e83baa4..1a3c6c9 100644
--- a/main.go
+++ b/main.go
@@ -38,8 +38,8 @@ var (
 	ownUserID32      = int32(0)
 	lastOwnTDMsg     time.Time
 	lastOwnTDMsgMux  sync.Mutex
-	lastChatTDMsg    map[uint64]time.Time
-	lastChatTDMsgMux map[uint64]sync.Mutex
+	lastChatTDMsg    map[int64]time.Time
+	lastChatTDMsgMux map[int64]sync.Mutex
 	lastChatMsgMux   sync.RWMutex
 	MQCWMsgQueue     chan ChatWarsMessage
 	MQTGCmdQueue     chan TGCommand