--- a/dom/animation/test/css-animations/file_keyframeeffect-getkeyframes.html
+++ b/dom/animation/test/css-animations/file_keyframeeffect-getkeyframes.html
@@ -563,20 +563,16 @@ test(function(t) {
 }, 'KeyframeEffectReadOnly.getKeyframes() returns expected values for ' +
    'animations with filter properties and missing keyframes');
 
 // Gecko-specific test case: We are specifically concerned here that the
 // computed value for text-shadow and a "none" specified on a keyframe
 // are correctly represented.
 
 test(function(t) {
-  if (!isServoEnabled()) {
-    // FIXME : Bug 1374564 : the serialization of text-shadow is wrong on gecko
-    return;
-  }
   var div = addDiv(t);
 
   div.style.textShadow = '1px 1px 2px rgb(0, 0, 0), ' +
                          '0 0 16px rgb(0, 0, 255), ' +
                          '0 0 3.2px rgb(0, 0, 255)';
   div.style.animation = 'anim-text-shadow 100s';
   var frames = getKeyframes(div);