diff --git a/Classes/Connection/Elasticsearch/IndexFactory.php b/Classes/Connection/Elasticsearch/IndexFactory.php
index d274db7..6493c3c 100644
--- a/Classes/Connection/Elasticsearch/IndexFactory.php
+++ b/Classes/Connection/Elasticsearch/IndexFactory.php
@@ -85,7 +85,7 @@ class IndexFactory implements Singleton
             foreach (['analyzer', 'filter'] as $optionsToExpand) {
                 if (isset($configuration['analysis'][$optionsToExpand])) {
                     foreach ($configuration['analysis'][$optionsToExpand] as $key => $options) {
-                        $configuration['analysis'][$optionsToExpand][$key] = $this->prepareOptions($options);
+                        $configuration['analysis'][$optionsToExpand][$key] = $this->prepareAnalyzerConfiguration($options);
                     }
                 }
             }