diff --git a/bhl_flt.inc.php b/bhl_flt.inc.php
index 269e9a7..86584b7 100644
--- a/bhl_flt.inc.php
+++ b/bhl_flt.inc.php
@@ -2,7 +2,7 @@
 namespace metagen_php;
 use Exception;
 
-function flt_bhl_ref($val, $name, $struct, $str_args)
+function flt_bhl_ref($val, $name, $data, $str_args)
 {
   if(!$val)
     return $val;