diff --git a/src/opnsense/mvc/app/views/layout_partials/form_input_tr.volt b/src/opnsense/mvc/app/views/layout_partials/form_input_tr.volt
index 2f90bd8fa..d4fa88bd0 100644
--- a/src/opnsense/mvc/app/views/layout_partials/form_input_tr.volt
+++ b/src/opnsense/mvc/app/views/layout_partials/form_input_tr.volt
@@ -58,7 +58,7 @@
         {% elseif type == "checkbox" %}
             <input type="checkbox" id="{{ id }}">
         {% elseif type == "select_multiple" %}
-            <select multiple="multiple" {% if size|default(false) %}size="{{size}}"{% endif %} id="{{ id }}" {% if style|default(false) %}class="{{style}}" {% endif %} {% if hint|default(false) %}data-hint="{{hint}}"{% endif %} {% if maxheight|default(false) %}data-maxheight="{{maxheight}}"{% endif %} data-width="{{width|default("334px")}}" data-allownew="{{allownew|default("false")}}" data-nbdropdownelements="{{nbDropdownElements|default("10")}}"></select>
+            <select multiple="multiple" {% if size|default(false) %}size="{{size}}"{% endif %} id="{{ id }}" class="{{style|default('selectpicker')}}" {% if hint|default(false) %}data-hint="{{hint}}"{% endif %} {% if maxheight|default(false) %}data-maxheight="{{maxheight}}"{% endif %} data-width="{{width|default("334px")}}" data-allownew="{{allownew|default("false")}}" data-nbdropdownelements="{{nbDropdownElements|default("10")}}"></select>
             <br/><a href="#" class="text-danger" id="clear-options_{{ id }}"><i class="fa fa-times-circle"></i></a> <small>{{ lang._('Clear All') }}</small>
         {% elseif type == "dropdown" %}
             <select {% if size|default(false) %}size="{{size}}"{% endif %} id="{{ id }}" class="{{style|default('selectpicker')}}" data-width="{{width|default("334px")}}"></select>