diff --git a/server/src/test/java/org/opensearch/search/SearchServiceStarTreeTests.java b/server/src/test/java/org/opensearch/search/SearchServiceStarTreeTests.java
index 46a3816144a52..95c877bfce0a8 100644
--- a/server/src/test/java/org/opensearch/search/SearchServiceStarTreeTests.java
+++ b/server/src/test/java/org/opensearch/search/SearchServiceStarTreeTests.java
@@ -553,6 +553,7 @@ public void testQueryParsingForBucketAggregations() throws IOException {
             .put(IndexMetadata.SETTING_NUMBER_OF_SHARDS, 1)
             .put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, 1)
             .put(StarTreeIndexSettings.IS_COMPOSITE_INDEX_SETTING.getKey(), true)
+            .put(IndexMetadata.INDEX_APPEND_ONLY_ENABLED_SETTING.getKey(), true)
             .build();
         CreateIndexRequestBuilder builder = client().admin()
             .indices()