diff -u b/core/themes/claro/css/components/form.css b/core/themes/claro/css/components/form.css
--- b/core/themes/claro/css/components/form.css
+++ b/core/themes/claro/css/components/form.css
@@ -91,7 +91,7 @@
 }
 
 .form-item__label.form-required::after,
-.fieldset__label.form-required::after {
+.fieldset__label::after {
   display: inline-block;
   margin-right: 0.15em;
   margin-left: 0.15em;
@@ -137,7 +137,8 @@
   color: #82828c;
 }
 
-.form-required::after {
+.form-item__label.form-required::after,
+.fieldset__label.form-required::after {
   display: inline-block;
   margin-right: 0.15em;
   margin-left: 0.15em;
diff -u b/core/themes/claro/css/components/form.pcss.css b/core/themes/claro/css/components/form.pcss.css
--- b/core/themes/claro/css/components/form.pcss.css
+++ b/core/themes/claro/css/components/form.pcss.css
@@ -67,7 +67,8 @@
   cursor: default; /* @todo ...or auto? */
   color: var(--input--disabled-fg-color);
 }
-.form-required::after {
+.form-item__label.form-required::after,
+.fieldset__label::after {
   display: inline-block;
   margin-right: 0.15em;
   margin-left: 0.15em;