diff --git a/administrator/templates/atum/scss/blocks/_form.scss b/administrator/templates/atum/scss/blocks/_form.scss
index 5922716934b5c..9aeeb85704e96 100644
--- a/administrator/templates/atum/scss/blocks/_form.scss
+++ b/administrator/templates/atum/scss/blocks/_form.scss
@@ -65,8 +65,8 @@ td .form-control {
 
 legend {
   margin-bottom: 1.1rem;
-  font-size: 1rem;
   font-weight: $normal-weight;
+  border-bottom: 1px solid;
 }
 
 .checkboxes {