diff --git a/src/test/html/content/test_Event.html b/src/test/html/content/test_Event.html
index 6b24d46daab..7523c843206 100644
--- a/src/test/html/content/test_Event.html
+++ b/src/test/html/content/test_Event.html
@@ -4,16 +4,13 @@
 <script>
 is_function(Event, "Event");
 
-/* broken due to #1042
 let ev = new Event("foopy");
 is_a(ev, Event);
 
-// FIXME: assert correct values
-alert(ev.type);
-alert(ev.defaultPrevented);
+is(ev.type, 'foopy');
+is(ev.defaultPrevented, false);
 ev.preventDefault();
-alert(ev.defaultPrevented);
-*/
+is(ev.defaultPrevented, true);
 
 finish();
 </script>
diff --git a/src/test/html/content/test_MouseEvent.html b/src/test/html/content/test_MouseEvent.html
index 2fb8d413e88..de826380c3b 100644
--- a/src/test/html/content/test_MouseEvent.html
+++ b/src/test/html/content/test_MouseEvent.html
@@ -4,17 +4,14 @@
 <script>
 is_function(MouseEvent, "MouseEvent");
 
-/* broken due to #1042
 let ev = new MouseEvent("press", {bubbles: true, screenX: 150, detail: 100});
 
-// FIXME: assert correct values
-alert(ev);
-alert(ev.screenX);
-alert(ev.detail);
-alert(ev.getModifierState("ctrl"));
 is_a(ev, Event);
 is_a(ev, UIEvent);
-*/
+is_a(ev, MouseEvent);
+is(ev.screenX, 150);
+is(ev.detail, 100);
+is(ev.getModifierState("ctrl"), false);
 
 finish();
 </script>