diff --git a/code/search/SearchIndex.php b/code/search/SearchIndex.php
index ec87358..ad9a56a 100644
--- a/code/search/SearchIndex.php
+++ b/code/search/SearchIndex.php
@@ -292,6 +292,7 @@ abstract class SearchIndex extends ViewableData
                     if (preg_match('/^(\w+)\(/', $type, $match)) {
                         $type = $match[1];
                     }
+					list($type, $args) = Object::parse_class_spec($type);
                     if (is_subclass_of($type, 'StringField')) {
                         $this->addFulltextField($field);
                     }