diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index df61672..891bf36 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -86,8 +86,7 @@ hapi:
     #    enable_index_missing_fields: false
     #    enable_index_contained_resource: false
     #    advanced_lucene_indexing: false
-    advanced_lucene_indexing: true
-#    enforce_referential_integrity_on_delete: false
+    #    enforce_referential_integrity_on_delete: false
     #    enforce_referential_integrity_on_write: false
     #    etag_support_enabled: true
     #    expunge_enabled: true