diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 90c81d0d..bf15182e 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -2877,7 +2877,6 @@ class Net_SSH2 {
                 // the most useful log for SSH2
                 case NET_SSH2_LOG_COMPLEX:
                     $this->message_number_log[] = $message_number;
-                    $this->_string_shift($message);
                     $this->log_size+= strlen($message);
                     $this->message_log[] = $message;
                     while ($this->log_size > NET_SSH2_LOG_MAX_SIZE) {
@@ -2935,9 +2934,11 @@ class Net_SSH2 {
      */
     function _send_channel_packet($client_channel, $data)
     {
-        // The maximum amount of data allowed is determined by the maximum
-        // packet size for the channel, and the current window size, whichever
-        // is smaller.
+        /* The maximum amount of data allowed is determined by the maximum
+           packet size for the channel, and the current window size, whichever
+           is smaller.
+
+           -- http://tools.ietf.org/html/rfc4254#section-5.2 */
         $max_size = min(
             $this->packet_size_client_to_server[$client_channel],
             $this->window_size_client_to_server[$client_channel]