diff --git a/td.go b/td.go
index 86ef6c3..f5fe75e 100644
--- a/td.go
+++ b/td.go
@@ -75,7 +75,8 @@ func ListenTG(c *tdlib.Client) {
 				lastChatMsgMux.RUnlock()
 				lastChatMsgMux.Lock()
 				if _, ok := lastChatTDMsg[m.ChatID64]; !ok {
-					lastChatTDMsg[m.ChatID64] = time.Now().Add(-1 * time.Second)
+					initTime := time.Now().Add(-1 * time.Second)
+					lastChatTDMsg[m.ChatID64] = initTime
 					lastChatTDMsgMux[m.ChatID64] = new(sync.Mutex)
 				}
 				lastChatMsgMux.Unlock()