diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php b/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
index b381fc597ce..f9cf57df344 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
@@ -195,6 +195,7 @@ if ($resql) {
 
     $param="&socid=".$socid;
 	print '<form name="add" action="'.$_SERVER["PHP_SELF"].'?socid=' . $object->id . '" method="POST">';
+    print '<input type="hidden" name="token" value="' . $_SESSION ['newtoken'] . '">';
 	print '<input type="hidden" name="socid" value="' . $object->id . '">';
 
     $letteringbutton = '<a class="divButAction"><span class="valignmiddle"><input class="butAction" type="submit" value="lettering" name="lettering" id="lettering"></span></a>';