diff --git a/src/test/java/org/opensearch/security/dlic/rest/api/RolesMappingApiTest.java b/src/test/java/org/opensearch/security/dlic/rest/api/RolesMappingApiTest.java
index b50e386bf5..17a7453070 100644
--- a/src/test/java/org/opensearch/security/dlic/rest/api/RolesMappingApiTest.java
+++ b/src/test/java/org/opensearch/security/dlic/rest/api/RolesMappingApiTest.java
@@ -422,18 +422,18 @@ public void checkNullElementsInArray() throws Exception{
 		HttpResponse response = rh.executePutRequest(ENDPOINT + "/rolesmapping/opendistro_security_role_starfleet_captains",
 													 body, new Header[0]);
 		Assert.assertEquals(HttpStatus.SC_BAD_REQUEST, response.getStatusCode());
-        Assert.assertTrue(response.getBody().contains("`null` is not allowed as json array element"));
+		Assert.assertTrue(response.getBody().contains("`null` is not allowed as json array element"));
 
 		body = FileHelper.loadFile("restapi/rolesmapping_null_array_element_backend_roles.json");
 		response = rh.executePutRequest(ENDPOINT + "/rolesmapping/opendistro_security_role_starfleet_captains",
 													 body, new Header[0]);
 		Assert.assertEquals(HttpStatus.SC_BAD_REQUEST, response.getStatusCode());
-        Assert.assertTrue(response.getBody().contains("`null` is not allowed as json array element"));
+		Assert.assertTrue(response.getBody().contains("`null` is not allowed as json array element"));
 
 		body = FileHelper.loadFile("restapi/rolesmapping_null_array_element_hosts.json");
 		response = rh.executePutRequest(ENDPOINT + "/rolesmapping/opendistro_security_role_starfleet_captains",
 										 body, new Header[0]);
 		Assert.assertEquals(HttpStatus.SC_BAD_REQUEST, response.getStatusCode());
-        Assert.assertTrue(response.getBody().contains("`null` is not allowed as json array element"));
+		Assert.assertTrue(response.getBody().contains("`null` is not allowed as json array element"));
 	}
 }