diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index 6130bf4..72dc263 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -50,6 +50,11 @@
 	 */	
 	function db_connect()
 	{
+		if ($this->port != '')
+		{
+			$this->hostname .= ','.$this->port;
+		}
+
 		return @mssql_connect($this->hostname, $this->username, $this->password);
 	}
 	
@@ -63,6 +68,11 @@
 	 */	
 	function db_pconnect()
 	{
+		if ($this->port != '')
+		{
+			$this->hostname .= ','.$this->port;
+		}
+
 		return @mssql_pconnect($this->hostname, $this->username, $this->password);
 	}