diff --git a/src/test/html/content/test_DOMParser.html b/src/test/html/content/test_DOMParser.html
index aee20a9e759..50c3b4f4f5f 100644
--- a/src/test/html/content/test_DOMParser.html
+++ b/src/test/html/content/test_DOMParser.html
@@ -5,7 +5,7 @@
is_function(DOMParser, "DOMParser");
let parser = new DOMParser();
is_a(parser, DOMParser);
-//alert(parser.parseFromString("", "text/html"));
+//is_a(parser.parseFromString("", "text/html"), Document);
finish();