diff --git a/dom/events/test/pointerevents/mochitest.ini b/dom/events/test/pointerevents/mochitest.ini
index aa15ee188195..d3cd344ce36c 100644
--- a/dom/events/test/pointerevents/mochitest.ini
+++ b/dom/events/test/pointerevents/mochitest.ini
@@ -23,7 +23,6 @@ support-files =
   support-files = pointerevent_element_haspointercapture-manual.html
 [test_pointerevent_gotpointercapture_before_first_pointerevent-manual.html]
   support-files = pointerevent_gotpointercapture_before_first_pointerevent-manual.html
-  disabled = should be investigated
 [test_pointerevent_lostpointercapture_for_disconnected_node-manual.html]
   support-files = pointerevent_lostpointercapture_for_disconnected_node-manual.html
 [test_pointerevent_lostpointercapture_is_first-manual.html]
diff --git a/dom/events/test/pointerevents/test_pointerevent_gotpointercapture_before_first_pointerevent-manual.html b/dom/events/test/pointerevents/test_pointerevent_gotpointercapture_before_first_pointerevent-manual.html
index f2be62f40dc0..8ec239a82c33 100644
--- a/dom/events/test/pointerevents/test_pointerevent_gotpointercapture_before_first_pointerevent-manual.html
+++ b/dom/events/test/pointerevents/test_pointerevent_gotpointercapture_before_first_pointerevent-manual.html
@@ -18,11 +18,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1000870
         iframe.src = "pointerevent_gotpointercapture_before_first_pointerevent-manual.html";
       }
       function executeTest(int_win) {
-        sendPointerEvent(int_win, "complete-notice", "pointermove", MouseEvent.MOZ_SOURCE_MOUSE, {button:0});
-        sendMouseEvent(int_win, "target0", "mousedown", {button:1});
-        sendPointerEvent(int_win, "target0", "pointermove", MouseEvent.MOZ_SOURCE_MOUSE, {button:0});
-        sendPointerEvent(int_win, "complete-notice", "pointermove", MouseEvent.MOZ_SOURCE_MOUSE, {button:0});
-        sendPointerEvent(int_win, "target0", "pointerdown", MouseEvent.MOZ_SOURCE_MOUSE, {button:1});
+        sendMouseEvent(int_win, "target0", "mousedown", {button:0});
+        sendMouseEvent(int_win, "target0", "mouseup",   {button:0});
       }
     </script>
   </head>