diff --git a/src/codegen.inc.php b/src/codegen.inc.php
index 3bbbdaf..505fe4d 100644
--- a/src/codegen.inc.php
+++ b/src/codegen.inc.php
@@ -330,7 +330,8 @@ function add_twig_filters(\Twig\Environment $twig)
     function(\mtgMetaField $field): string {
       $tag = get_field_alias_or_name($field);
       $type = $field->getType();
-      if($type instanceof \mtgBuiltinType && !$type->isString() && !$type->isBlob()) {
+      if($type instanceof \mtgMetaEnum || 
+        ($type instanceof \mtgBuiltinType && !$type->isString() && !$type->isBlob())) {
         return $tag.',string';
       }
       return $tag;