diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index 53d8352f..851f507a 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -2367,7 +2367,7 @@ class Net_SFTP extends Net_SSH2
         }
 
         switch ($type) {
-            case NET_SFTP_BLOCK_DEVICE: return 'block';
+            case NET_SFTP_TYPE_BLOCK_DEVICE: return 'block';
             case NET_SFTP_TYPE_CHAR_DEVICE: return 'char';
             case NET_SFTP_TYPE_DIRECTORY: return 'dir';
             case NET_SFTP_TYPE_FIFO: return 'fifo';