diff --git a/Userland/Libraries/LibWeb/DOM/Node.h b/Userland/Libraries/LibWeb/DOM/Node.h
index 91ab9dee9d..acdd0955e6 100644
--- a/Userland/Libraries/LibWeb/DOM/Node.h
+++ b/Userland/Libraries/LibWeb/DOM/Node.h
@@ -77,6 +77,8 @@ public:
 
     virtual bool is_editable() const;
 
+    virtual bool is_html_template_element() const { return false; }
+
     ExceptionOr<NonnullRefPtr<Node>> pre_insert(NonnullRefPtr<Node>, RefPtr<Node>);
     ExceptionOr<NonnullRefPtr<Node>> pre_remove(NonnullRefPtr<Node>);
 
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.h b/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.h
index 28b38a3b72..8382a8ef90 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.h
@@ -25,9 +25,16 @@ public:
     virtual void cloned(Node& copy, bool clone_children) override;
 
 private:
+    virtual bool is_html_template_element() const final { return true; }
+
     DOM::Document& appropriate_template_contents_owner_document(DOM::Document&);
 
     RefPtr<DOM::DocumentFragment> m_content;
 };
 
 }
+
+namespace Web::DOM {
+template<>
+inline bool Node::fast_is<HTML::HTMLTemplateElement>() const { return is_html_template_element(); }
+}