diff --git a/parser/html/nsHtml5TreeBuilderCppSupplement.h b/parser/html/nsHtml5TreeBuilderCppSupplement.h
index 61906d53c8..62df6d002c 100644
--- a/parser/html/nsHtml5TreeBuilderCppSupplement.h
+++ b/parser/html/nsHtml5TreeBuilderCppSupplement.h
@@ -70,6 +70,7 @@ nsHtml5TreeBuilder::~nsHtml5TreeBuilder()
 nsIContentHandle*
 nsHtml5TreeBuilder::createElement(int32_t aNamespace,
                                   nsIAtom* aName,
+                                  nsHtml5HtmlAttributes* aAttributes,
                                   nsIContentHandle* aIntendedParent,
                                   nsHtml5ContentCreatorFunction aCreator)
 {