diff --git a/packages/missgram/include/missgram.hpp b/packages/missgram/include/missgram.hpp
index 32472284..d5c72ff2 100644
--- a/packages/missgram/include/missgram.hpp
+++ b/packages/missgram/include/missgram.hpp
@@ -2,17 +2,17 @@
 
 namespace missgram
 {
-  void db_write(std::string misskey_note, int telegram_message_id);
-  std::optional<int> db_read(std::string misskey_note);
+  void db_write(std::string misskey_note, std::int32_t telegram_message_id);
+  std::optional<std::int32_t> db_read(std::string misskey_note);
 
-  std::optional<int> tg_send(std::string text, std::optional<int> replyId = {});
+  std::optional<std::int32_t> tg_send(std::string text, std::optional<std::int32_t> replyId = {});
 
   struct Config
   {
     std::string Secret;
     std::string TelegramBotToken;
-    int TelegramChatId;
-    int ServerPort;
+    std::int64_t TelegramChatId;
+    std::int16_t ServerPort;
     std::string dbPassword;
   } inline config;
 }
diff --git a/packages/missgram/src/db.cpp b/packages/missgram/src/db.cpp
index ed4c9277..e7323878 100644
--- a/packages/missgram/src/db.cpp
+++ b/packages/missgram/src/db.cpp
@@ -1,16 +1,16 @@
 # include <missgram.hpp>
 # include <sqlgen/postgres.hpp>
 
-struct Record { std::string misskey_note; int telegram_message_id; };
+struct Record { std::string misskey_note; std::int32_t telegram_message_id; };
 
-void missgram::db_write(std::string misskey_note, int telegram_message_id)
+void missgram::db_write(std::string misskey_note, std::int32_t telegram_message_id)
 {
   auto&& conn = sqlgen::postgres::connect
     ({.user = "missgram", .password = config.dbPassword, .host = "127.0.0.1", .dbname = "missgram"});
   sqlgen::write(conn, Record{misskey_note, telegram_message_id});
 }
 
-std::optional<int> missgram::db_read(std::string misskey_note)
+std::optional<std::int32_t> missgram::db_read(std::string misskey_note)
 {
   using namespace sqlgen::literals;
   auto&& conn = sqlgen::postgres::connect
diff --git a/packages/missgram/src/tg.cpp b/packages/missgram/src/tg.cpp
index c39d2fa9..fdad9013 100644
--- a/packages/missgram/src/tg.cpp
+++ b/packages/missgram/src/tg.cpp
@@ -1,7 +1,7 @@
 # include <missgram.hpp>
 # include <tgbot/tgbot.h>
 
-std::optional<int> missgram::tg_send(std::string text, std::optional<int> replyId)
+std::optional<std::int32_t> missgram::tg_send(std::string text, std::optional<std::int32_t> replyId)
 {
   using namespace biu::literals;
 
@@ -25,5 +25,5 @@ std::optional<int> missgram::tg_send(std::string text, std::optional<int> replyI
   }
 
   // 返回消息 ID
-  if (message) return message->messageId;
+  if (message) return message->messageId; else return {};
 }