diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
index d567f09dc4..3e2ed76d33 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
@@ -50,7 +50,7 @@ public:
 
     virtual RefPtr<Layout::Node> create_layout_node(NonnullRefPtr<CSS::StyleProperties>) override;
 
-    enum TypeAttributeState {
+    enum class TypeAttributeState {
 #define __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(_, state) state,
         ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTES
 #undef __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE