diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 89e57487..87d07517 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -2314,6 +2314,10 @@ class Net_SSH2
                 }
             }
 
+            if (!count($newargs)) {
+                return false;
+            }
+
             foreach ($newargs as $arg) {
                 if ($this->_login_helper($username, $arg)) {
                     return true;