--- a/dom/animation/test/chrome.ini
+++ b/dom/animation/test/chrome.ini
@@ -4,17 +4,16 @@ support-files =
   ../../imptests/testharness.js
   ../../imptests/testharnessreport.js
   !/dom/animation/test/chrome/file_animate_xrays.html
 
 [chrome/test_animate_xrays.html]
 # file_animate_xrays.html needs to go in mochitest.ini since it is served
 # over HTTP
 [chrome/test_animation_observers_async.html]
-skip-if = stylo
 [chrome/test_animation_observers_sync.html]
 [chrome/test_animation_performance_warning.html]
 [chrome/test_animation_properties.html]
 [chrome/test_cssanimation_missing_keyframes.html]
 [chrome/test_generated_content_getAnimations.html]
 [chrome/test_restyles.html]
 skip-if = os == 'android' || stylo # bug 1335986
 [chrome/test_running_on_compositor.html]