diff --git a/src/codegen.inc.php b/src/codegen.inc.php
index 0baf125..1ad679c 100644
--- a/src/codegen.inc.php
+++ b/src/codegen.inc.php
@@ -24,7 +24,6 @@ function supported_tokens()
   return [
     'POD',
     'default',
-    'optional',
     'bitfields',
     'cloneable',
     'virtual',
@@ -386,10 +385,6 @@ function is_null_str($default)
 
 function var_sync($fname, \mtgType $type, $buf, array $tokens, $opts)
 {
-  $optional = array_key_exists('optional', $tokens);
-  if($optional)
-    $opts .= " | MetaSyncFieldOpts.SKIP_OPTIONAL";
-
   $key_name = array_key_exists('alias', $tokens) ? $tokens['alias'] : $fname; 
 
   $str = '';