diff --git a/tests/system/providers/opensearch/example_opensearch.py b/tests/system/providers/opensearch/example_opensearch.py
index 6a8660557cf78..b82af8ebddf16 100644
--- a/tests/system/providers/opensearch/example_opensearch.py
+++ b/tests/system/providers/opensearch/example_opensearch.py
@@ -110,7 +110,7 @@ def load_connections():
         query={"query": {"bool": {"must": {"match": {"message": "hello world"}}}}},
     )
     search = Search()
-    search.index = INDEX_NAME
+    search._index = [INDEX_NAME]
     search_object = search.filter("term", logger="airflow").query("match", message="hello airflow")
 
     search_high_level = OpenSearchQueryOperator(task_id="high_level_query", search_object=search_object)