diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/members/moremember-brief.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/members/moremember-brief.tt
index bec0c9c4fa..4c07cbf432 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/members/moremember-brief.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/members/moremember-brief.tt
@@ -92,10 +92,13 @@
     </div>
     </div>
 </div>
-<div class="row">
-    <div class="col-xs-12">
-        <fieldset class="action"><input type="button" class="close" value="Close window" /></fieldset>
-    </div>
-</div>
+
+    <nav class="navbar navbar-default navbar-fixed-bottom">
+        <div class="container-fluid">
+            <fieldset class="action">
+                <button type="button" class="btn btn-default close_window focus">Close window</button>
+            </fieldset>
+        </div>
+    </nav>
 
 [% INCLUDE 'intranet-bottom.inc' popup_window=1 %]
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/members/update-child.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/members/update-child.tt
index 9f7e5e700c..0f019bd3b4 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/members/update-child.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/members/update-child.tt
@@ -19,7 +19,7 @@
     <h1> Choose adult category </h1>
 
     [% IF patron_categories %]
-        <form method="post" action="update-child.pl">
+        <form method="post" id="updatechildf" action="update-child.pl">
             [% INCLUDE 'csrf-token.inc' %]
             <fieldset>
                 <table id="catst">
@@ -45,11 +45,15 @@
                 <input type="hidden" name="op" value="cud-update" />
                 <input type="hidden" name="borrowernumber" value="[% borrowernumber | html %]" />
                 <input type="hidden" name="cattype" value="[% cattype | html %]" />
-                <fieldset class="action">
-                    <input class="submit" type="submit" value="Submit" />
-                    <a href="#" class="cancel close">Cancel</a>
-                </fieldset>
             </fieldset>
+            <nav class="navbar navbar-default navbar-fixed-bottom">
+                <div class="container-fluid">
+                    <fieldset class="action">
+                        <input class="btn btn-primary" type="submit" value="Submit" />
+                        <button type="button" class="btn btn-default close_window">Cancel</button>
+                    </fieldset>
+                </div>
+            </nav>
         </form>
     [% END %]
 [% END %]
@@ -68,6 +72,13 @@
                 ],
                 "paginate": false
             }));
+            $("#updatechildf").validate({
+                rules: {
+                    catcode: {
+                        required: true,
+                    },
+                }
+            });
         });
     </script>
     [% IF ( SUCCESS ) %]
diff --git a/koha-tmpl/intranet-tmpl/prog/js/members-menu.js b/koha-tmpl/intranet-tmpl/prog/js/members-menu.js
index c3989d98aa..cbd91ce13e 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/members-menu.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/members-menu.js
@@ -127,7 +127,7 @@ function confirm_updatechild() {
 
 function update_child() {
     if( number_of_adult_categories > 1 ){
-        window.open('/cgi-bin/koha/members/update-child.pl?op=multi&borrowernumber=' + borrowernumber,'UpdateChild','width=400,height=300,toolbar=no,scrollbars=yes,resizable=yes');
+        openWindow('/cgi-bin/koha/members/update-child.pl?op=multi&borrowernumber=' + borrowernumber,'UpdateChild');
     } else {
         confirm_updatechild();
     }