diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index 44a8d06f..c10fb2be 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -3117,7 +3117,7 @@ class SFTP extends SSH2
         while ($tempLength > 0) {
             $temp = $this->get_channel_packet(self::CHANNEL, true);
             if ($temp === true) {
-                if ($this->channel_status[self::CHANNEL] === NET_SSH2_MSG_CHANNEL_CLOSE) {
+                if ($this->channel_status[self::CHANNEL] === SSH2MessageType::CHANNEL_CLOSE) {
                     $this->channel_close = true;
                 }
                 $this->packet_type = false;