diff --git a/pywxdump/db/__init__.py b/pywxdump/db/__init__.py
index b8145e2..8f94f46 100644
--- a/pywxdump/db/__init__.py
+++ b/pywxdump/db/__init__.py
@@ -35,11 +35,11 @@ class DBHandler(MicroHandler, MediaHandler, OpenIMContactHandler, PublicMsgHandl
         self.OpenIMMedia_exist = self.OpenIMMedia_tables_exist()
         self.Favorite_exist = self.Favorite_tables_exist()
 
-        if self.MSG_exist:  # 添加索引 StrTalker
+        if self.MSG_exist:  # 添加索引
             self.Msg_add_index()
-        if self.PublicMsg_exist:  # 添加索引 StrTalker
+        if self.PublicMsg_exist:  # 添加索引
             self.PublicMsg_add_index()
-        if self.Micro_exist:  # 添加索引 StrTalker
+        if self.Micro_exist:  # 添加索引
             self.Micro_add_index()
 
         # print(self.MSG_exist, self.Micro_exist, self.Media_exist, self.OpenIMContact_exist, self.PublicMsg_exist,