diff --git a/src/mysql.h b/src/mysql.h
index 4ca50a6..b528e08 100644
--- a/src/mysql.h
+++ b/src/mysql.h
@@ -221,6 +221,7 @@ namespace module
 		virtual void regist_global(const char* name, sol::state* lua){}
 		virtual void delete_global() { delete this; }
 		virtual void self_free();
+		virtual int64_t self_ptr() { return (int64_t)this; }
 	private:
 		ylib::mysql::conn* m_conn = nullptr;
 	};