diff --git a/layout/style/Loader.cpp b/layout/style/Loader.cpp
index 4780b58c942a..811d85fb0863 100644
--- a/layout/style/Loader.cpp
+++ b/layout/style/Loader.cpp
@@ -1601,6 +1601,7 @@ Loader::ParseSheet(const nsACString& aBytes,
                    AllowAsyncParse aAllowAsync)
 {
   LOG(("css::Loader::ParseSheet"));
+  AUTO_PROFILER_LABEL("css::Loader::ParseSheet", LAYOUT);
   MOZ_ASSERT(aLoadData);
   aLoadData->mIsBeingParsed = true;