diff --git a/AK/TypeCasts.h b/AK/TypeCasts.h
index d9c924bca0..7141d3b8a3 100644
--- a/AK/TypeCasts.h
+++ b/AK/TypeCasts.h
@@ -38,7 +38,9 @@ ALWAYS_INLINE bool is(NonnullRefPtr<InputType> const& input)
 template<typename OutputType, typename InputType>
 ALWAYS_INLINE CopyConst<InputType, OutputType>* as_if(InputType& input)
 {
-    if constexpr (requires { input.template fast_is<RemoveCVReference<OutputType>>(); static_cast<CopyConst<InputType, OutputType>*>(&input); }) {
+    if constexpr (requires { input.template fast_as<RemoveCVReference<OutputType>>(); }) {
+        return input.template fast_as<RemoveCVReference<OutputType>>();
+    } else if constexpr (requires { input.template fast_is<RemoveCVReference<OutputType>>(); static_cast<CopyConst<InputType, OutputType>*>(&input); }) {
         if (!is<OutputType>(input))
             return nullptr;
         return static_cast<CopyConst<InputType, OutputType>*>(&input);
diff --git a/Libraries/LibWeb/DOM/Node.h b/Libraries/LibWeb/DOM/Node.h
index 7bc07851fa..f6573fa005 100644
--- a/Libraries/LibWeb/DOM/Node.h
+++ b/Libraries/LibWeb/DOM/Node.h
@@ -379,6 +379,11 @@ public:
     template<typename T>
     bool fast_is() const = delete;
 
+    template<typename T>
+    T* fast_as() = delete;
+    template<typename T>
+    T const* fast_as() const = delete;
+
     WebIDL::ExceptionOr<void> ensure_pre_insertion_validity(JS::Realm&, GC::Ref<Node> node, GC::Ptr<Node> child) const;
 
     bool is_host_including_inclusive_ancestor_of(Node const&) const;