diff --git a/error_translator.go b/error_translator.go
index 38238fd..bf91276 100644
--- a/error_translator.go
+++ b/error_translator.go
@@ -6,6 +6,7 @@ import (
 	"gorm.io/gorm"
 )
 
+// The error codes to map mysql errors to gorm errors, here is the mysql error codes reference https://dev.mysql.com/doc/mysql-errors/8.0/en/server-error-reference.html.
 var errCodes = map[uint16]error{
 	1062: gorm.ErrDuplicatedKey,
 	1452: gorm.ErrForeignKeyViolated,