diff --git a/addons/crm/wizard/crm_lead_to_opportunity.py b/addons/crm/wizard/crm_lead_to_opportunity.py
index 3c847ade42a..9e1109e0440 100644
--- a/addons/crm/wizard/crm_lead_to_opportunity.py
+++ b/addons/crm/wizard/crm_lead_to_opportunity.py
@@ -62,7 +62,7 @@ class crm_lead2opportunity_partner(osv.osv_memory):
                 for id in ids:
                     tomerge.add(id)
             if email:
-                ids = lead_obj.search(cr, uid, [('email_from', 'ilike', email[0]), ('state', '!=', 'done')])
+                ids = lead_obj.search(cr, uid, [('email_from', '=ilike', email[0]), ('state', '!=', 'done')])
                 for id in ids:
                     tomerge.add(id)