diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt
index daefdf6774..e430f5e45b 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt
@@ -991,7 +991,7 @@ legend.collapsed i.fa.fa-caret-down::before {
                                         <li>
                                             <label for="categorycode_entry" class="required">Category: </label>
                                             <select id="categorycode_entry" name="categorycode">
-                                                [% FOREACH category_type IN patron_categories.keys %]
+                                                [% FOREACH category_type IN patron_categories.keys.sort %]
                                                     [% SWITCH category_type %]
                                                     [% CASE 'C' %]
                                                         <optgroup label="Child">