diff --git a/mod/editpost.php b/mod/editpost.php
index a97d2adff..e36e0ea5a 100644
--- a/mod/editpost.php
+++ b/mod/editpost.php
@@ -1,6 +1,7 @@
 <?php
 
 require_once('acl_selectors.php');
+require_once('include/crypto.php');
 
 function editpost_content(&$a) {