diff --git a/addons/sale_timesheet/i18n/sale_timesheet.pot b/addons/sale_timesheet/i18n/sale_timesheet.pot
index 861d084ce18..bcde8bc3cf1 100644
--- a/addons/sale_timesheet/i18n/sale_timesheet.pot
+++ b/addons/sale_timesheet/i18n/sale_timesheet.pot
@@ -1205,6 +1205,11 @@ msgstr ""
 msgid "Timesheet Encoding Unit"
 msgstr ""
 
+#. module: sale_timesheet
+#: model_terms:ir.ui.view,arch_db:sale_timesheet.sale_advance_payment_inv_timesheet_view_form
+msgid "Timesheets Period"
+msgstr ""
+
 #. module: sale_timesheet
 #: model:ir.model.fields,field_description:sale_timesheet.field_project_project__timesheet_product_id
 #: model:ir.model.fields,field_description:sale_timesheet.field_project_task__timesheet_product_id
diff --git a/addons/sale_timesheet/wizard/sale_make_invoice_advance_views.xml b/addons/sale_timesheet/wizard/sale_make_invoice_advance_views.xml
index f1411006ba0..5944845b70b 100644
--- a/addons/sale_timesheet/wizard/sale_make_invoice_advance_views.xml
+++ b/addons/sale_timesheet/wizard/sale_make_invoice_advance_views.xml
@@ -15,8 +15,11 @@
                     name="timesheet_invoice_date_range"
                     invisible="not invoicing_timesheet_enabled or advance_payment_method != 'delivered'">
                     <field
+                        class="w-75 w-md-50 w-lg-25"
                         name="date_start_invoice_timesheet"
+                        string="Timesheets Period"
                         widget="daterange"
+                        required="date_start_invoice_timesheet or date_end_invoice_timesheet"
                         options="{'end_date_field': 'date_end_invoice_timesheet'}"
                         title="Only timesheets not yet invoiced (and validated, if applicable) from this period will be invoiced. If the period is not indicated, all timesheets not yet invoiced (and validated, if applicable) will be invoiced without distinction."
                     />