diff --git a/src/test/java/org/opensearch/ad/model/AnomalyDetectorTests.java b/src/test/java/org/opensearch/ad/model/AnomalyDetectorTests.java
index 9305e387a..ec0b174b9 100644
--- a/src/test/java/org/opensearch/ad/model/AnomalyDetectorTests.java
+++ b/src/test/java/org/opensearch/ad/model/AnomalyDetectorTests.java
@@ -994,7 +994,6 @@ public void testNullFixedValue() throws IOException {
                 null,
                 null,
                 null,
-                null,
                 null
             )
         );