diff --git a/libraries/sanitizing.lib.php b/libraries/sanitizing.lib.php
index 388ca1397..858ce487a 100644
--- a/libraries/sanitizing.lib.php
+++ b/libraries/sanitizing.lib.php
@@ -3,6 +3,7 @@
 /**
  *
  * @version $Id$
+ * This is in a separate script because it's called from a number of scripts
  */
 
 /**