diff --git a/tests/php/indexables/TestComment.php b/tests/php/indexables/TestComment.php
index 8252c83385..b9f93a5a88 100644
--- a/tests/php/indexables/TestComment.php
+++ b/tests/php/indexables/TestComment.php
@@ -245,7 +245,7 @@ public function testBasicCommentQuery() {
 		// First try without ES and make sure everything is right.
 		$comments_query = new \WP_Comment_Query( [] );
 
-		$this->assertTrue( $comments_query->elasticsearch_success );
+		$this->assertObjectNotHasAttribute( 'elasticsearch_success', $comments_query );
 
 		$comments = $comments_query->get_comments();