diff --git a/lib/error/connection-error.js b/lib/error/connection-error.js
index 5a259b04..8abdd784 100644
--- a/lib/error/connection-error.js
+++ b/lib/error/connection-error.js
@@ -18,6 +18,7 @@ class ConnectionError extends MSSQLError {
     super(message, code)
 
     this.name = 'ConnectionError'
+    this.message = message
   }
 }
 
diff --git a/lib/msnodesqlv8/connection-pool.js b/lib/msnodesqlv8/connection-pool.js
index 09b367f4..f7fd1a60 100644
--- a/lib/msnodesqlv8/connection-pool.js
+++ b/lib/msnodesqlv8/connection-pool.js
@@ -23,7 +23,7 @@ class ConnectionPool extends BaseConnectionPool {
 
       if (!this.config.connectionString) {
         cfg.conn_str = buildConnectionString({
-          Driver: CONNECTION_DRIVER,
+          Driver: this.config.connectionDriver || CONNECTION_DRIVER,
           Server: this.config.options.instanceName ? `${this.config.server}\\${this.config.options.instanceName}` : `${this.config.server},${this.config.port}`,
           Database: this.config.database,
           Uid: this.config.user,