diff --git a/addons/hr/views/res_config_settings_views.xml b/addons/hr/views/res_config_settings_views.xml
index 4395cb3aace..1e4550f3cb9 100644
--- a/addons/hr/views/res_config_settings_views.xml
+++ b/addons/hr/views/res_config_settings_views.xml
@@ -21,7 +21,7 @@
                                 </div>
                                 <div class="content-group">
                                     <div class="mt16">
-                                        <field name="resource_calendar_id"
+                                        <field name="resource_calendar_id" required="1"
                                             class="o_light_label"
                                             domain="[('company_id', '=', company_id)]"
                                             context="{'default_company_id': company_id}"/>