diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index 0b4a8756..c23ae512 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -2858,6 +2858,10 @@ class SFTP extends SSH2
      */
     private function send_sftp_packet($type, $data, $request_id = 1)
     {
+        // in SSH2.php the timeout is cumulative per function call. eg. exec() will
+        // timeout after 10s. but for SFTP.php it's cumulative per packet
+        $this->curTimeout = $this->timeout;
+
         $packet = $this->use_request_id ?
             pack('NCNa*', strlen($data) + 5, $type, $request_id, $data) :
             pack('NCa*',  strlen($data) + 1, $type, $data);