diff --git a/addons/account_bank_statement_extensions/account_bank_statement.py b/addons/account_bank_statement_extensions/account_bank_statement.py
index 38cd68fbc2f..72c3320be38 100644
--- a/addons/account_bank_statement_extensions/account_bank_statement.py
+++ b/addons/account_bank_statement_extensions/account_bank_statement.py
@@ -58,7 +58,7 @@ class account_bank_statement(osv.osv):
                 line_ids = [l.id for l in st.line_ids]
                 cr.execute("UPDATE account_bank_statement_line  \
                     SET state='draft' WHERE id in %s ",
-                    (tuple([line_ids]),))
+                    (tuple(line_ids),))
                 bank_statement_line_obj.invalidate_cache(cr, uid, ['state'], line_ids, context=context)
         return True