--- a/layout/style/Loader.cpp
+++ b/layout/style/Loader.cpp
@@ -1596,16 +1596,17 @@ Loader::LoadSheet(SheetLoadData* aLoadDa
  * ParseSheet handles parsing the data stream.
  */
 Loader::Completed
 Loader::ParseSheet(const nsACString& aBytes,
                    SheetLoadData* aLoadData,
                    AllowAsyncParse aAllowAsync)
 {
   LOG(("css::Loader::ParseSheet"));
+  AUTO_PROFILER_LABEL("css::Loader::ParseSheet", LAYOUT);
   MOZ_ASSERT(aLoadData);
   aLoadData->mIsBeingParsed = true;
 
   StyleSheet* sheet = aLoadData->mSheet;
   MOZ_ASSERT(sheet);
 
   // Some cases, like inline style and UA stylesheets, need to be parsed
   // synchronously. The former may trigger child loads, the latter must not.