diff --git a/htmlawed.post_update.php b/htmlawed.post_update.php
index 140a6d7..337c9ab 100644
--- a/htmlawed.post_update.php
+++ b/htmlawed.post_update.php
@@ -1,3 +1,5 @@
+<?php
+
 /**
  * Implements hook_post_update_NAME().
  * Simply inform about new default config. value for htmLawed.