diff --git a/db/structs.go b/db/structs.go
index baa6308..e426f6d 100644
--- a/db/structs.go
+++ b/db/structs.go
@@ -8,7 +8,7 @@ import (
 
 type Chat struct {
 	tongo.Item `bson:",inline"`
-	ChatId     int64
+	ChatId     int64 `bson:"chat_id"`
 	Title      string
 	TopicId    int64 `bson:"topic_id"`
 }