diff --git a/addons/crm/crm_phonecall_view.xml b/addons/crm/crm_phonecall_view.xml
index f0e5565f1c8..86061c6e5ce 100644
--- a/addons/crm/crm_phonecall_view.xml
+++ b/addons/crm/crm_phonecall_view.xml
@@ -70,7 +70,7 @@
                     <button string="Convert to Opportunity"
                         name="%(phonecall2opportunity_act)d"
                         icon="gtk-index" type="action"
-                        attrs="{'invisible':['|', ('opportunity_id','!=',False), ('state','=','done')]}" />
+                        attrs="{'invisible':[('opportunity_id','!=',False)]}" />
                     <label colspan="6"  string=""/>
                     <button string="Schedule Other Call"
                      icon="terp-call-start"