diff --git a/Archive/Tar.php b/Archive/Tar.php
index 76771d5..8a2d2db 100644
--- a/Archive/Tar.php
+++ b/Archive/Tar.php
@@ -257,7 +257,7 @@ public function __destruct()
     {
         $this->_close();
         // ----- Look for a local copy to delete
-        if ($this->_temp_tarname != '') {
+        if ($this->_temp_tarname != '' && (bool) preg_match('/^tar[[:alnum:]]*\.tmp$/', $this->_temp_tarname)) {
             @unlink($this->_temp_tarname);
         }
     }