diff --git a/addons/website_event_track/models/event.py b/addons/website_event_track/models/event.py
index cd8910d9429..265a7f3ef81 100644
--- a/addons/website_event_track/models/event.py
+++ b/addons/website_event_track/models/event.py
@@ -174,5 +174,6 @@ class event_sponsors(osv.osv):
     }
 
     def has_access_to_partner(self, cr, uid, ids, context=None):
-        return self.pool.get("res.partner").search(cr, uid, [("id", "in", ids)], count=True, context=context)
+        partner_ids = [sponsor.partner_id.id for sponsor in self.browse(cr, uid, ids, context=context)]
+        return len(partner_ids) == self.pool.get("res.partner").search(cr, uid, [("id", "in", partner_ids)], count=True, context=context)