diff --git a/lib/internal/Magento/Framework/Filesystem/Io/Sftp.php b/lib/internal/Magento/Framework/Filesystem/Io/Sftp.php
index 34768d52f61c9..095e4353c9abe 100644
--- a/lib/internal/Magento/Framework/Filesystem/Io/Sftp.php
+++ b/lib/internal/Magento/Framework/Filesystem/Io/Sftp.php
@@ -20,7 +20,7 @@ class Sftp extends AbstractIo
     const SSH2_PORT = 22;
 
     /**
-     * @var \Net_SFTP $_connection
+     * @var \phpseclib\Net\SFTP $_connection
      */
     protected $_connection = null;
 
@@ -184,7 +184,7 @@ public function read($filename, $destination = null)
      */
     public function write($filename, $source, $mode = null)
     {
-        $mode = is_readable($source) ? NET_SFTP_LOCAL_FILE : NET_SFTP_STRING;
+        $mode = is_readable($source) ? \phpseclib\Net\SFTP::SOURCE_LOCAL_FILE : \phpseclib\Net\SFTP::SOURCE_STRING;
         return $this->_connection->put($filename, $source, $mode);
     }