diff --git a/addons/account/account_bank_statement.py b/addons/account/account_bank_statement.py
index c193eb48a03..c85f48a83f1 100644
--- a/addons/account/account_bank_statement.py
+++ b/addons/account/account_bank_statement.py
@@ -531,8 +531,9 @@ class account_bank_statement_line(osv.osv):
                   ('reconcile_id', '=', False),
                   ('state', '=', 'valid'),
                   ('account_id.reconcile', '=', True),
-                  ('id', 'not in', excluded_ids),
-                  ('partner_id', 'in', (False, st_line.partner_id.id))]
+                  ('id', 'not in', excluded_ids),]
+        if st_line.partner_id:
+            domain.append(('partner_id', '=', st_line.partner_id.id))
         return domain
 
     def get_reconciliation_proposition(self, cr, uid, st_line, excluded_ids=None, context=None):