diff --git a/lib/msnodesqlv8/connection-pool.js b/lib/msnodesqlv8/connection-pool.js
index 4d15120b..d734912b 100644
--- a/lib/msnodesqlv8/connection-pool.js
+++ b/lib/msnodesqlv8/connection-pool.js
@@ -43,7 +43,7 @@ class ConnectionPool extends BaseConnectionPool {
 
       msnodesql.open(cfg, (err, tds) => {
         if (err) {
-          err = new ConnectionError(err)
+          err = new ConnectionError(err.message, err.code)
           return reject(err)
         }