diff --git a/src/scanner/classes/MalwareDetector.inc.php b/src/scanner/classes/MalwareDetector.inc.php
index fd1a75e..9f7c377 100644
--- a/src/scanner/classes/MalwareDetector.inc.php
+++ b/src/scanner/classes/MalwareDetector.inc.php
@@ -132,11 +132,8 @@ function detectMalware($file_path, &$found_fragment, &$pos, $start_time, $timeou
         $content = implode('', file($file_path));
 
         $list_of_signatures = array(
-              '<?php',
-              '<?=',
-              '#!/usr/',
-              '#!/bin/',
-              '#!/local/',
+              '<?',
+              '#!',
               'eval(',
               'assert(',
               'base64_decode('