diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/patron-attr-types.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/patron-attr-types.tt
index 631a41867b..3a19bbab2b 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/patron-attr-types.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/patron-attr-types.tt
@@ -425,24 +425,22 @@
         }
 
         function updateCheckboxes() {
+            if (opac_display && opac_editable) {
             if (!opac_display.checked) {
                 setDisabled(opac_editable, true);
             } else {
                 setDisabled(opac_editable, false);
             }
+            }
+            if (opac_editable && opac_mandatory) {
             if (opac_editable.checked) {
                 setDisabled(opac_mandatory, false);
             } else {
                 setDisabled(opac_mandatory, true);
             }
+        }
         }
 
-        opac_display.addEventListener("change", updateCheckboxes);
-        opac_editable.addEventListener("change", updateCheckboxes);
-
-        updateCheckboxes();
-
-        $(document).ready(function () {
             function toggle_search_default() {
                 if ($("#staff_searchable").is(":checked")) {
                     $("#searched_by_default").prop("disabled", false);
@@ -450,6 +448,13 @@
                     $("#searched_by_default").prop("disabled", true).prop("checked", false);
                 }
             }
+
+        opac_display?.addEventListener("change", updateCheckboxes);
+        opac_editable?.addEventListener("change", updateCheckboxes);
+
+        updateCheckboxes();
+
+        $(document).ready(function () {
             $("#staff_searchable").on("change", function () {
                 toggle_search_default();
             });
@@ -490,7 +495,7 @@
                 );
             });
 
-            $("#library_limitation")[0].style.minWidth = "450px";
+            $("#library_limitation").css("min-width", "450px");
             $("#library_limitation").select2();
         });
     </script>