diff --git a/addons/hr_holidays/hr_holidays_workflow.xml b/addons/hr_holidays/hr_holidays_workflow.xml
index a2e1d54f96c..b729ea54a30 100644
--- a/addons/hr_holidays/hr_holidays_workflow.xml
+++ b/addons/hr_holidays/hr_holidays_workflow.xml
@@ -77,6 +77,7 @@
     <record model="workflow.transition" id="holiday_confirm2validate1"> <!-- 2. submitted -> first_accepted (validate signal) if double_validation-->
         <field name="act_from" ref="act_confirm" />
         <field name="act_to" ref="act_validate1" />
+        <field name="signal">validate</field>
         <field name="condition">double_validation</field>
         <field name="group_id" ref="base.group_hr_user"/>
     </record>