diff --git a/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp b/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
index 207bfc0ef1..7f08327e5e 100644
--- a/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -45,6 +46,16 @@ LocationObject::~LocationObject()
 {
 }
 
+// https://html.spec.whatwg.org/multipage/history.html#relevant-document
+DOM::Document const* LocationObject::relevant_document() const
+{
+    // A Location object has an associated relevant Document, which is this Location object's
+    // relevant global object's browsing context's active document, if this Location object's
+    // relevant global object's browsing context is non-null, and null otherwise.
+    auto* browsing_context = static_cast<WindowObject&>(global_object()).impl().browsing_context();
+    return browsing_context ? browsing_context->active_document() : nullptr;
+}
+
 // https://html.spec.whatwg.org/multipage/history.html#dom-location-href
 JS_DEFINE_NATIVE_FUNCTION(LocationObject::href_getter)
 {
diff --git a/Userland/Libraries/LibWeb/Bindings/LocationObject.h b/Userland/Libraries/LibWeb/Bindings/LocationObject.h
index e89d82b22e..9f7282d942 100644
--- a/Userland/Libraries/LibWeb/Bindings/LocationObject.h
+++ b/Userland/Libraries/LibWeb/Bindings/LocationObject.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -29,6 +30,8 @@ public:
     //        but we don't have the infrastructure in place to implement them yet.
 
 private:
+    DOM::Document const* relevant_document() const;
+
     JS_DECLARE_NATIVE_FUNCTION(reload);
     JS_DECLARE_NATIVE_FUNCTION(replace);