diff --git a/app-proto/main.css b/app-proto/main.css
index 7ba1206..4726a27 100644
--- a/app-proto/main.css
+++ b/app-proto/main.css
@@ -163,7 +163,7 @@ details[open]:has(li) .element-switch::after {
   font-style: normal;
 }
 
-.regulator:has(.invalid) > .status::after, details:has(.invalid):not([open]) .status::after {
+.regulator-input.invalid + .status::after, details:has(.invalid):not([open]) .status::after {
   content: '⚠';
   color: var(--text-invalid);
 }