diff --git a/src/test/html/content/test_DOMParser.html b/src/test/html/content/test_DOMParser.html
index 50c3b4f4f5f..c773116e3f6 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);
-//is_a(parser.parseFromString("", "text/html"), Document);
+is_a(parser.parseFromString("", "text/html"), Document);
 finish();
 </script>
 </head>