diff --git a/loopback/server/connectors/vn-mysql.js b/loopback/server/connectors/vn-mysql.js
index 5edef43952..2012caf37d 100644
--- a/loopback/server/connectors/vn-mysql.js
+++ b/loopback/server/connectors/vn-mysql.js
@@ -342,6 +342,9 @@ exports.initialize = function initialize(dataSource, callback) {
     }
 };
 
+//  Code extracted from original Loopback MySQL connector
+//  since it cannot be reused, please try not to alter it.
+//  https://github.com/loopbackio/loopback-connector-mysql/blob/v6.2.0/lib/mysql.js
 MySQL.prototype.connect = function(callback) {
     const self = this;
     const options = generateOptions(this.settings);