diff --git a/Userland/Libraries/LibWeb/HTML/Window.cpp b/Userland/Libraries/LibWeb/HTML/Window.cpp
index 33897561d74..b409f1a6815 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Window.cpp
@@ -1038,14 +1038,12 @@ WebIDL::ExceptionOr<void> Window::initialize_web_interfaces(Badge<WindowEnvironm
 
     Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::WindowPrototype>(realm, "Window"));
 
-    m_crypto = MUST_OR_THROW_OOM(heap().allocate<Crypto::Crypto>(realm, realm));
     m_location = MUST_OR_THROW_OOM(heap().allocate<Location>(realm, realm));
     m_navigator = MUST_OR_THROW_OOM(heap().allocate<Navigator>(realm, realm));
 
     MUST_OR_THROW_OOM(Bindings::WindowGlobalMixin::initialize(realm, *this));
 
     // FIXME: These should be native accessors, not properties
-    define_native_accessor(realm, "crypto", crypto_getter, {}, JS::Attribute::Enumerable);
     define_native_accessor(realm, "screen", screen_getter, screen_setter, JS::Attribute::Enumerable | JS::Attribute::Configurable);
     define_native_accessor(realm, "innerWidth", inner_width_getter, {}, JS::Attribute::Enumerable);
     define_native_accessor(realm, "innerHeight", inner_height_getter, {}, JS::Attribute::Enumerable);
@@ -1340,6 +1338,14 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<HighResolutionTime::Performance>> Window::p
     return JS::NonnullGCPtr { *m_performance };
 }
 
+// https://w3c.github.io/webcrypto/#dom-windoworworkerglobalscope-crypto
+WebIDL::ExceptionOr<JS::NonnullGCPtr<Crypto::Crypto>> Window::crypto()
+{
+    if (!m_crypto)
+        m_crypto = MUST_OR_THROW_OOM(heap().allocate<Crypto::Crypto>(realm(), realm()));
+    return JS::NonnullGCPtr { *m_crypto };
+}
+
 static JS::ThrowCompletionOr<TimerHandler> make_timer_handler(JS::VM& vm, JS::Value handler)
 {
     if (handler.is_function())
@@ -1531,12 +1537,6 @@ JS_DEFINE_NATIVE_FUNCTION(Window::location_setter)
     return JS::js_undefined();
 }
 
-JS_DEFINE_NATIVE_FUNCTION(Window::crypto_getter)
-{
-    auto* impl = TRY(impl_from(vm));
-    return &impl->crypto();
-}
-
 JS_DEFINE_NATIVE_FUNCTION(Window::inner_width_getter)
 {
     auto* impl = TRY(impl_from(vm));
diff --git a/Userland/Libraries/LibWeb/HTML/Window.h b/Userland/Libraries/LibWeb/HTML/Window.h
index 5c705821866..032a9435090 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.h
+++ b/Userland/Libraries/LibWeb/HTML/Window.h
@@ -96,8 +96,6 @@ public:
 
     void deallocate_timer_id(Badge<Timer>, i32);
 
-    Crypto::Crypto& crypto() { return *m_crypto; }
-
     CSS::Screen& screen();
 
     DOM::Event* current_event() { return m_current_event.ptr(); }
@@ -169,6 +167,8 @@ public:
 
     WebIDL::ExceptionOr<JS::NonnullGCPtr<HighResolutionTime::Performance>> performance();
 
+    WebIDL::ExceptionOr<JS::NonnullGCPtr<Crypto::Crypto>> crypto();
+
 private:
     explicit Window(JS::Realm&);
 
@@ -274,8 +274,6 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(request_idle_callback);
     JS_DECLARE_NATIVE_FUNCTION(cancel_idle_callback);
 
-    JS_DECLARE_NATIVE_FUNCTION(crypto_getter);
-
     HTML::Location* m_location { nullptr };
 
     // [[CrossOriginPropertyDescriptorMap]], https://html.spec.whatwg.org/multipage/browsers.html#crossoriginpropertydescriptormap
diff --git a/Userland/Libraries/LibWeb/HTML/Window.idl b/Userland/Libraries/LibWeb/HTML/Window.idl
index afa1099125a..19eb2a20a71 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.idl
+++ b/Userland/Libraries/LibWeb/HTML/Window.idl
@@ -1,3 +1,4 @@
+#import <Crypto/Crypto.idl>
 #import <DOM/Document.idl>
 #import <DOM/EventHandler.idl>
 #import <DOM/EventTarget.idl>
@@ -44,6 +45,9 @@ interface Window : EventTarget {
     // FIXME: Everything from here on should be shared through WindowOrWorkerGlobalScope
     // https://w3c.github.io/hr-time/#the-performance-attribute
     [Replaceable] readonly attribute Performance performance;
+
+    // https://w3c.github.io/webcrypto/#crypto-interface
+    [SameObject] readonly attribute Crypto crypto;
 };
 Window includes GlobalEventHandlers;
 Window includes WindowEventHandlers;