diff --git a/addons/crm/crm_lead.py b/addons/crm/crm_lead.py
index d2025d10085..bf54f412d12 100644
--- a/addons/crm/crm_lead.py
+++ b/addons/crm/crm_lead.py
@@ -448,7 +448,7 @@ class crm_lead(base_stage, format_address, osv.osv):
             """
             type = 'lead'
             for opp in opportunities:
-                if ('opportunity' in [opp.type, type]):
+                if (opp.type == 'opportunity'):
                     return 'opportunity'
 
             return type