diff --git a/addons/account/models/account_bank_statement.py b/addons/account/models/account_bank_statement.py
index 871f4f9ebd7..a3f1544987e 100644
--- a/addons/account/models/account_bank_statement.py
+++ b/addons/account/models/account_bank_statement.py
@@ -418,21 +418,20 @@ class AccountBankStatementLine(models.Model):
 
     @api.multi
     def button_cancel_reconciliation(self):
-        moves_to_unbind = self.env['account.move']
         moves_to_cancel = self.env['account.move']
         payment_to_unreconcile = self.env['account.payment']
         for st_line in self:
-            moves_to_unbind |= st_line.journal_entry_ids
+            moves_to_unbind = st_line.journal_entry_ids
             for move in st_line.journal_entry_ids:
                 if any(line.payment_id for line in move.line_ids):
                     for line in move.line_ids:
                         payment_to_unreconcile |= line.payment_id
                     continue
                 moves_to_cancel |= st_line.journal_entry_ids
-        if moves_to_unbind:
-            moves_to_unbind.write({'statement_line_id': False})
-            for move in moves_to_unbind:
-                move.line_ids.filtered(lambda x:x.statement_id == st_line.statement_id).write({'statement_id': False})
+            if moves_to_unbind:
+                moves_to_unbind.write({'statement_line_id': False})
+                for move in moves_to_unbind:
+                    move.line_ids.filtered(lambda x:x.statement_id == st_line.statement_id).write({'statement_id': False})
 
         if moves_to_cancel:
             for move in moves_to_cancel: