--- a/dom/smil/nsSMILCSSValueType.cpp
+++ b/dom/smil/nsSMILCSSValueType.cpp
@@ -671,20 +671,16 @@ ValueFromStringHelper(nsCSSPropertyID aP
 static ServoAnimationValues
 ValueFromStringHelper(nsCSSPropertyID aPropID,
                       Element* aTargetElement,
                       nsPresContext* aPresContext,
                       nsStyleContext* aStyleContext,
                       const nsAString& aString)
 {
   ServoAnimationValues result;
-  // FIXME (bug 1358966): Support shorthand properties
-  if (nsCSSProps::IsShorthand(aPropID)) {
-    return result;
-  }
 
   nsIDocument* doc = aTargetElement->GetUncomposedDoc();
   if (!doc) {
     return result;
   }
 
   // Parse property
   // FIXME this is using the wrong base uri (bug 1343919)