diff --git a/purchase.xml b/purchase.xml
index 73cd3b2c71..3d8261f83e 100644
--- a/purchase.xml
+++ b/purchase.xml
@@ -351,11 +351,13 @@
             <field name="act_from" ref="purchase_activity_draft"/>
             <field name="act_to" ref="purchase_activity_quotation"/>
             <field name="signal">quotation</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_draft_cancel">
             <field name="act_from" ref="purchase_activity_draft"/>
             <field name="act_to" ref="purchase_activity_cancel"/>
             <field name="signal">cancel</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_quotation_draft">
             <field name="act_from" ref="purchase_activity_quotation"/>
@@ -366,11 +368,13 @@
             <field name="act_from" ref="purchase_activity_quotation"/>
             <field name="act_to" ref="purchase_activity_confirmed"/>
             <field name="signal">confirm</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_quotation_cancel">
             <field name="act_from" ref="purchase_activity_quotation"/>
             <field name="act_to" ref="purchase_activity_cancel"/>
             <field name="signal">cancel</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_confirmed_invoice_method">
             <field name="act_from" ref="purchase_activity_confirmed"/>
@@ -401,11 +405,13 @@
             <field name="act_from" ref="purchase_activity_invoice_purchase_exception"/>
             <field name="act_to" ref="purchase_activity_waiting_invoice_purchase"/>
             <field name="signal">invoice_ok</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_invoice_purchase_exception_cancel">
             <field name="act_from" ref="purchase_activity_invoice_purchase_exception"/>
             <field name="act_to" ref="purchase_activity_cancel"/>
             <field name="signal">cancel</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_waiting_invoice_purchase_invoice_done">
             <field name="act_from" ref="purchase_activity_waiting_invoice_purchase"/>
@@ -440,11 +446,13 @@
             <field name="act_from" ref="purchase_activity_packing_exception"/>
             <field name="act_to" ref="purchase_activity_cancel"/>
             <field name="signal">cancel</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_packing_exception_waiting_packing">
             <field name="act_from" ref="purchase_activity_packing_exception"/>
             <field name="act_to" ref="purchase_activity_waiting_packing"/>
             <field name="signal">packing_ok</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_waiting_packing_invoice_packing_method">
             <field name="act_from" ref="purchase_activity_waiting_packing"/>
@@ -493,11 +501,13 @@
             <field name="act_from" ref="purchase_activity_invoice_packing_exception"/>
             <field name="act_to" ref="purchase_activity_cancel"/>
             <field name="signal">cancel</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_invoice_packing_exception_waiting_invoice_packing">
             <field name="act_from" ref="purchase_activity_invoice_packing_exception"/>
             <field name="act_to" ref="purchase_activity_waiting_invoice_packing"/>
             <field name="signal">invoice_ok</field>
+            <field name="group" ref="group_purchase"/>
         </record>
         <record model="workflow.transition" id="purchase_transition_waiting_invoice_packing_done">
             <field name="act_from" ref="purchase_activity_waiting_invoice_packing"/>