diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 9ae7d176..0a649fd9 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -101,8 +101,6 @@ define('NET_SSH2_CHANNEL_SHELL',     1);
 define('NET_SSH2_CHANNEL_SUBSYSTEM', 2);
 define('NET_SSH2_CHANNEL_AGENT_REQUEST', 3);
 define('NET_SSH2_CHANNEL_AGENT_FORWARD', 4);
-
-
 /**#@-*/
 
 /**#@+
@@ -2248,7 +2246,6 @@ class Net_SSH2
         return false;
     }
 
-
     /**
      * Set Timeout
      *
@@ -2825,8 +2822,6 @@ class Net_SSH2
                     }
                     $payload = $this->_get_binary_packet();
                 }
-            default:
-                break;
         }
 
         // see http://tools.ietf.org/html/rfc4252#section-5.4; only called when the encryption has been activated and when we haven't already logged in
@@ -3007,7 +3002,7 @@ class Net_SSH2
                 }
 
                 switch ($this->channel_status[$channel]) {
-                    case NET_SSH2_MSG_CHANNEL_OPEN:;
+                    case NET_SSH2_MSG_CHANNEL_OPEN:
                         switch ($type) {
                             case NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION:
                                 extract(unpack('Nserver_channel', $this->_string_shift($response, 4)));
diff --git a/phpseclib/System/SSH/Agent.php b/phpseclib/System/SSH/Agent.php
index 47146045..1b09a34d 100644
--- a/phpseclib/System/SSH/Agent.php
+++ b/phpseclib/System/SSH/Agent.php
@@ -437,7 +437,7 @@ class System_SSH_Agent
     function _forward_data($data)
     {
         if ($this->expected_bytes > 0) {
-            $this->socket_buffer .= $data;
+            $this->socket_buffer.= $data;
             $this->expected_bytes -= strlen($data);
         } else {
             $agent_data_bytes = current(unpack('N', $data));
diff --git a/tests/Functional/Net/SSH2AgentTest.php b/tests/Functional/Net/SSH2AgentTest.php
index 1426f66c..af79b60d 100644
--- a/tests/Functional/Net/SSH2AgentTest.php
+++ b/tests/Functional/Net/SSH2AgentTest.php
@@ -46,7 +46,9 @@ class Functional_Net_SSH2AgentTest extends PhpseclibFunctionalTestCase
 
         $agent->startSSHForwarding($ssh);
         $this->assertEquals($username, trim($ssh->exec("ssh " . $username . "@" . $hostname . ' \'whoami\'')));
+
         $agent->stopSSHForwarding($ssh);
+        $this->assertEquals($username, 'failure');
 
         return $args;
     }