diff --git a/src/Illuminate/Database/Connectors/SqlServerConnector.php b/src/Illuminate/Database/Connectors/SqlServerConnector.php
index 7a2a6c814632..cc135643a1ab 100755
--- a/src/Illuminate/Database/Connectors/SqlServerConnector.php
+++ b/src/Illuminate/Database/Connectors/SqlServerConnector.php
@@ -155,7 +155,7 @@ protected function buildConnectString($driver, array $arguments)
      */
     protected function buildHostString(array $config, $separator)
     {
-        if (isset($config['port'])) {
+        if (isset($config['port']) && ! empty($config['port'])) {
             return $config['host'].$separator.$config['port'];
         } else {
             return $config['host'];