diff --git a/views/edit.tt b/views/edit.tt
index 53798926e..442a5bbed 100755
--- a/views/edit.tt
+++ b/views/edit.tt
@@ -716,7 +716,11 @@
           END;
       END;
     ELSIF col.type == "tree";
+      UNLESS col.optional;
+      '<fieldset class="fieldset input fieldset--required">';
+      ELSE;
       '<fieldset class="fieldset input">';
+      END;
         INCLUDE fields/sub/label_fieldset.tt
           id           = col.id
           label_checkbox_name = page == "bulk" ? "bulk_inc_" _ col.id : ''