diff --git a/parser/html/nsHtml5TreeBuilderCppSupplement.h b/parser/html/nsHtml5TreeBuilderCppSupplement.h
index f09cc18539..aa6767e427 100644
--- a/parser/html/nsHtml5TreeBuilderCppSupplement.h
+++ b/parser/html/nsHtml5TreeBuilderCppSupplement.h
@@ -185,9 +185,9 @@ nsHtml5TreeBuilder::createElement(int32_t aNamespace,
               aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN);
             nsHtml5String integrity =
               aAttributes->getValue(nsHtml5AttributeName::ATTR_INTEGRITY);
-            bool async =
-              aAttributes->contains(nsHtml5AttributeName::ATTR_ASYNC);
-            bool defer =
+            bool async =
+              aAttributes->contains(nsHtml5AttributeName::ATTR_ASYNC);
+            bool defer =
               aAttributes->contains(nsHtml5AttributeName::ATTR_DEFER);
             bool noModule =
               aAttributes->contains(nsHtml5AttributeName::ATTR_NOMODULE);
@@ -198,9 +198,9 @@ nsHtml5TreeBuilder::createElement(int32_t aNamespace,
               crossOrigin,
               integrity,
               mode == nsHtml5TreeBuilder::IN_HEAD,
-              async,
+              async,
               defer,
-              noModule);
+              noModule);
             mCurrentHtmlScriptIsAsyncOrDefer = async || defer;
           }
         } else if (nsHtml5Atoms::link == aName) {