diff --git a/Userland/Libraries/LibWeb/HTML/Window.cpp b/Userland/Libraries/LibWeb/HTML/Window.cpp
index f3c9a7bcfd..ed465830be 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Window.cpp
@@ -1132,7 +1132,7 @@ void Window::initialize_web_interfaces(Badge<WindowEnvironmentSettingsObject>)
     define_native_accessor(realm, "history", history_getter, {}, JS::Attribute::Enumerable);
     define_native_accessor(realm, "performance", performance_getter, performance_setter, JS::Attribute::Enumerable | JS::Attribute::Configurable);
     define_native_accessor(realm, "crypto", crypto_getter, {}, JS::Attribute::Enumerable);
-    define_native_accessor(realm, "screen", screen_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);
     define_native_accessor(realm, "devicePixelRatio", device_pixel_ratio_getter, {}, JS::Attribute::Enumerable | JS::Attribute::Configurable);
@@ -1647,6 +1647,11 @@ JS_DEFINE_NATIVE_FUNCTION(Window::screen_getter)
     return &impl->screen();
 }
 
+JS_DEFINE_NATIVE_FUNCTION(Window::screen_setter)
+{
+    REPLACEABLE_PROPERTY_SETTER(Window, screen);
+}
+
 JS_DEFINE_NATIVE_FUNCTION(Window::event_getter)
 {
     auto* impl = TRY(impl_from(vm));
diff --git a/Userland/Libraries/LibWeb/HTML/Window.h b/Userland/Libraries/LibWeb/HTML/Window.h
index 42d88fb31b..29ec3f2498 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.h
+++ b/Userland/Libraries/LibWeb/HTML/Window.h
@@ -224,7 +224,9 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(performance_setter);
 
     JS_DECLARE_NATIVE_FUNCTION(history_getter);
+
     JS_DECLARE_NATIVE_FUNCTION(screen_getter);
+    JS_DECLARE_NATIVE_FUNCTION(screen_setter);
 
     JS_DECLARE_NATIVE_FUNCTION(event_getter);
     JS_DECLARE_NATIVE_FUNCTION(event_setter);