diff --git a/plugin/src/main/java/org/opensearch/ml/indices/MLIndicesHandler.java b/plugin/src/main/java/org/opensearch/ml/indices/MLIndicesHandler.java
index 856370eeab..3bda1a9939 100644
--- a/plugin/src/main/java/org/opensearch/ml/indices/MLIndicesHandler.java
+++ b/plugin/src/main/java/org/opensearch/ml/indices/MLIndicesHandler.java
@@ -37,7 +37,7 @@ public class MLIndicesHandler {
 
     ClusterService clusterService;
     Client client;
-    private static final Map<String, Object> indexSettings = Map.of("index.auto_expand_replicas", "0-5");
+    private static final Map<String, Object> indexSettings = Map.of("index.auto_expand_replicas", "0-1");
     private static final Map<String, AtomicBoolean> indexMappingUpdated = new HashMap<>();
 
     static {