diff --git a/_test/nested_include.test.php b/_test/nested_include.test.php
index 69d883c..4dfb527 100644
--- a/_test/nested_include.test.php
+++ b/_test/nested_include.test.php
@@ -44,7 +44,7 @@ private function _validateContent($mainHTML, $secondHTML, $thirdHTML) {
     }
 
     private function _matchHeader($level, $text, $html) {
-        return preg_match('/<h'.$level.'[^>]*><a[^>]*>'.$text.'/', $html) > 0;
+        return preg_match('/<h'.$level.'[^>]*>(<a[^>]*>)?'.$text.'/', $html) > 0;
     }
 
     private function _createPages() {