diff --git a/addons/account/models/account_bank_statement.py b/addons/account/models/account_bank_statement.py
index 140ca5dc5c0..943beb0b285 100644
--- a/addons/account/models/account_bank_statement.py
+++ b/addons/account/models/account_bank_statement.py
@@ -432,7 +432,8 @@ class AccountBankStatementLine(models.Model):
                 moves_to_cancel |= st_line.journal_entry_ids
         if moves_to_unbind:
             moves_to_unbind.write({'statement_line_id': False})
-            moves_to_unbind.line_ids.filtered(lambda x:x.statement_id == st_line.statement_id).write({'statement_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: