diff --git a/phpseclib/Crypt/AES.php b/phpseclib/Crypt/AES.php
index 4ebf07e5..616c362e 100644
--- a/phpseclib/Crypt/AES.php
+++ b/phpseclib/Crypt/AES.php
@@ -66,7 +66,7 @@
  * Include Crypt_Rijndael
  */
 if (!class_exists('Crypt_Rijndael')) {
-    require_once 'Rijndael.php';
+    require_once('Rijndael.php');
 }
 
 /**#@+
diff --git a/phpseclib/Net/SFTP/Stream.php b/phpseclib/Net/SFTP/Stream.php
index 23448570..1527b0dc 100644
--- a/phpseclib/Net/SFTP/Stream.php
+++ b/phpseclib/Net/SFTP/Stream.php
@@ -153,7 +153,7 @@ class Net_SFTP_Stream {
      */
     function _parse_path($path)
     {
-        extract(parse_url($path));
+        extract(parse_url($path) + array('port' => 22));
 
         if (!isset($host)) {
             return false;
@@ -201,7 +201,7 @@ class Net_SFTP_Stream {
             if (isset(self::$instances[$host][$port][$user][(string) $pass])) {
                 $this->sftp = self::$instances[$host][$port][$user][(string) $pass];
             } else {
-                $this->sftp = new Net_SFTP($host, isset($port) ? $port : 22);
+                $this->sftp = new Net_SFTP($host, $port);
                 if (isset($this->notification) && is_callable($this->notification)) {
                     /* if !is_callable($this->notification) we could do this: