diff --git a/src/test/java/org/opensearch/knn/KNNSingleNodeTestCase.java b/src/test/java/org/opensearch/knn/KNNSingleNodeTestCase.java
index 0b3219cc6e..b4edcf3041 100644
--- a/src/test/java/org/opensearch/knn/KNNSingleNodeTestCase.java
+++ b/src/test/java/org/opensearch/knn/KNNSingleNodeTestCase.java
@@ -69,7 +69,7 @@ public void tearDown() throws Exception {
      * Create a k-NN index with default settings
      */
     protected IndexService createKNNIndex(String indexName) {
-        return createIndex(indexName, getKNNDefaultIndexSettings(), null);
+        return createIndex(indexName, getKNNDefaultIndexSettings());
     }
 
     /**