diff --git a/addons/crm/crm_phonecall.py b/addons/crm/crm_phonecall.py
index da08f97250a..a0ef56010e5 100644
--- a/addons/crm/crm_phonecall.py
+++ b/addons/crm/crm_phonecall.py
@@ -155,6 +155,18 @@ class crm_phonecall(base_state, osv.osv):
         })
         return partner_id
 
+    def on_change_opportunity(self, cr, uid, ids, opportunity_id, context=None):
+        values = {}
+        if opportunity_id:
+            opportunity = self.pool.get('crm.lead').browse(cr, uid, opportunity_id, context=context)
+            values = {
+                'section_id' : opportunity.section_id and opportunity.section_id.id or False,
+                'partner_phone' : opportunity.phone,
+                'partner_mobile' : opportunity.mobile,
+                'partner_id' : opportunity.partner_id and opportunity.partner_id.id or False,
+            }
+        return {'value' : values}
+
     def _call_set_partner(self, cr, uid, ids, partner_id, context=None):
         write_res = self.write(cr, uid, ids, {'partner_id' : partner_id}, context=context)
         self._call_set_partner_send_note(cr, uid, ids, context)
diff --git a/addons/crm/crm_phonecall_view.xml b/addons/crm/crm_phonecall_view.xml
index 3b5162288a4..896bf8c9ee0 100644
--- a/addons/crm/crm_phonecall_view.xml
+++ b/addons/crm/crm_phonecall_view.xml
@@ -75,7 +75,7 @@
                 <field name="user_id"/>
                 <field name="categ_id" invisible="1"/>
                 <field name="create_date" invisible="1"/>
-                <field name="opportunity_id" invisible="1"/>
+                <field name="opportunity_id" invisible="1" on_change="on_change_opportunity(opportunity_id)"/>
                 <field name="needaction_pending" invisible="1"/>
                 <button string="Convert to Opportunity"
                     name="%(phonecall2opportunity_act)d"
@@ -147,7 +147,7 @@
                         domain="[('object_id.model', '=', 'crm.phonecall')]"/>
                     <field name="partner_mobile"/>
                     <field name="priority"/>
-                    <field name="opportunity_id"/>
+                    <field name="opportunity_id" on_change="on_change_opportunity(opportunity_id)"/>
                 </group>
 
                 <field name="description" placeholder="Description..."/>