diff --git a/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp b/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp
index 57adcda879..50703e14b9 100644
--- a/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp
+++ b/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp
@@ -12,8 +12,9 @@
 
 namespace Web::DOM {
 
-ShadowRoot::ShadowRoot(Document& document, Element& host)
+ShadowRoot::ShadowRoot(Document& document, Element& host, Bindings::ShadowRootMode mode)
     : DocumentFragment(document)
+    , m_mode(mode)
 {
     set_host(&host);
 }
diff --git a/Userland/Libraries/LibWeb/DOM/ShadowRoot.h b/Userland/Libraries/LibWeb/DOM/ShadowRoot.h
index 37e1add258..46a5b10338 100644
--- a/Userland/Libraries/LibWeb/DOM/ShadowRoot.h
+++ b/Userland/Libraries/LibWeb/DOM/ShadowRoot.h
@@ -30,7 +30,7 @@ public:
     WebIDL::ExceptionOr<void> set_inner_html(DeprecatedString const&);
 
 private:
-    ShadowRoot(Document&, Element&);
+    ShadowRoot(Document&, Element& host, Bindings::ShadowRootMode);
     virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
 
     // ^Node
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index 490f16d660..7e61cb33c6 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -382,7 +382,7 @@ void HTMLInputElement::create_shadow_tree_if_needed()
         break;
     }
 
-    auto shadow_root = heap().allocate<DOM::ShadowRoot>(realm(), document(), *this).release_allocated_value_but_fixme_should_propagate_errors();
+    auto shadow_root = heap().allocate<DOM::ShadowRoot>(realm(), document(), *this, Bindings::ShadowRootMode::Closed).release_allocated_value_but_fixme_should_propagate_errors();
     auto initial_value = m_value;
     if (initial_value.is_null())
         initial_value = DeprecatedString::empty();