diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index e4d952fa30..f814a7eb77 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -537,6 +537,13 @@ JS::NonnullGCPtr<HTMLCollection> Element::get_elements_by_class_name(DeprecatedF
     });
 }
 
+// https://dom.spec.whatwg.org/#element-shadow-host
+bool Element::is_shadow_host() const
+{
+    // An element is a shadow host if its shadow root is non-null.
+    return m_shadow_root != nullptr;
+}
+
 void Element::set_shadow_root(JS::GCPtr<ShadowRoot> shadow_root)
 {
     if (m_shadow_root == shadow_root)
diff --git a/Userland/Libraries/LibWeb/DOM/Element.h b/Userland/Libraries/LibWeb/DOM/Element.h
index 1fe9b02258..f54bf367a3 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.h
+++ b/Userland/Libraries/LibWeb/DOM/Element.h
@@ -131,6 +131,7 @@ public:
 
     JS::NonnullGCPtr<HTMLCollection> get_elements_by_class_name(DeprecatedFlyString const&);
 
+    bool is_shadow_host() const;
     ShadowRoot* shadow_root_internal() { return m_shadow_root.ptr(); }
     ShadowRoot const* shadow_root_internal() const { return m_shadow_root.ptr(); }
     void set_shadow_root(JS::GCPtr<ShadowRoot>);
diff --git a/Userland/Libraries/LibWeb/HTML/Focus.cpp b/Userland/Libraries/LibWeb/HTML/Focus.cpp
index e74322da62..abf0523eaa 100644
--- a/Userland/Libraries/LibWeb/HTML/Focus.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Focus.cpp
@@ -210,7 +210,7 @@ void run_unfocusing_steps(DOM::Node* old_focus_target)
     // with the focusing steps.
 
     auto is_shadow_host = [](DOM::Node* node) {
-        return is<DOM::Element>(node) && static_cast<DOM::Element*>(node)->shadow_root() != nullptr;
+        return is<DOM::Element>(node) && static_cast<DOM::Element*>(node)->is_shadow_host();
     };
 
     // 1. If old focus target is a shadow host whose shadow root's delegates focus is true, and old focus target's