diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index bea04714..5303a3a8 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -272,7 +272,7 @@ class SFTP extends SSH2
      * @var array
      * @access private
      */
-    var $requestBuffer = array();
+    private $requestBuffer = array();
 
     /**
      * Preserve timestamps on file downloads / uploads
@@ -282,7 +282,7 @@ class SFTP extends SSH2
      * @var bool
      * @access private
      */
-    var $preserveTime = false;
+    private $preserveTime = false;
 
     /**
      * Default Constructor.
diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 598c59b6..0dd52922 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -640,7 +640,7 @@ class SSH2
      * @see self::exec()
      * @access private
      */
-    var $window_resize = 0x40000000;
+    private $window_resize = 0x40000000;
 
     /**
      * Window size, server to client
@@ -729,7 +729,7 @@ class SSH2
      * @see self::setKeepAlive()
      * @access private
      */
-    var $keepAlive;
+    private $keepAlive;
 
     /**
      * Real-time log file pointer