diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index d5404994..43ad4f54 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -2237,7 +2237,12 @@ class Net_SFTP extends Net_SSH2
             return false;
         }
 
-        if (empty($path)) {
+        if (is_object($path)) {
+            // It's an object. Cast it as string before we check anything else.
+            $path = (string) $path;
+        }
+
+        if (!is_string($path) || $path == '') {
             return false;
         }