diff --git a/CHANGELOG b/CHANGELOG
index 881bccca4f..9a93b6fe7f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Add relate from request to purchase and from purchase to request
+
 Version 5.8.0 - 2020-11-02
 * Bug fixes (see mercurial logs for details)
 * Remove support for Python 3.5
diff --git a/purchase.xml b/purchase.xml
index 88f41a788b..7cf3ce13ea 100644
--- a/purchase.xml
+++ b/purchase.xml
@@ -8,5 +8,22 @@ this repository contains the full copyright notices and license terms. -->
             <field name="inherit" ref="purchase.purchase_line_view_form"/>
             <field name="name">purchase_line_form</field>
         </record>
+        <record model="ir.action.act_window" id="act_open_request_form">
+            <field name="name">Requests</field>
+            <field name="res_model">purchase.request</field>
+            <field name="domain"
+                eval="[('purchase', 'in', Eval('active_ids'))]"
+                pyson="1"/>
+        </record>
+        <record model="ir.action.keyword" id="act_open_request_keyword">
+            <field name="keyword">form_relate</field>
+            <field name="model">purchase.purchase,-1</field>
+            <field name="action" ref="act_open_request_form"/>
+        </record>
+        <record model="ir.action-res.group"
+            id="act_open_request_form_group_purchase">
+            <field name="action" ref="act_open_request_form"/>
+            <field name="group" ref="group_purchase_request"/>
+        </record>
     </data>
 </tryton>
diff --git a/purchase_request.xml b/purchase_request.xml
index 2b0414b98f..cb618b9b72 100644
--- a/purchase_request.xml
+++ b/purchase_request.xml
@@ -197,6 +197,24 @@ this repository contains the full copyright notices and license terms. -->
             <field name="perm_create" eval="False"/>
             <field name="perm_delete" eval="False"/>
         </record>
+        <record model="ir.action.act_window" id="act_open_purchase_form">
+            <field name="name">Purchases</field>
+            <field name="res_model">purchase.purchase</field>
+            <field name="domain"
+                eval="[('lines.requests', 'in', Eval('active_ids'))]"
+                pyson="1"/>
+        </record>
+        <record model="ir.action.keyword" id="act_open_purchase_keyword">
+            <field name="keyword">form_relate</field>
+            <field name="model">purchase.request,-1</field>
+            <field name="action" ref="act_open_purchase_form"/>
+        </record>
+        <record model="ir.action-res.group"
+            id="act_open_purchase_form_group_purchase">
+            <field name="action" ref="act_open_purchase_form"/>
+            <field name="group" ref="purchase.group_purchase"/>
+        </record>
+
 
     </data>
 </tryton>