diff --git a/account_banking_payment/model/banking_import_transaction.py b/account_banking_payment/model/banking_import_transaction.py
index cb4665369..da6d268e4 100644
--- a/account_banking_payment/model/banking_import_transaction.py
+++ b/account_banking_payment/model/banking_import_transaction.py
@@ -119,8 +119,12 @@ class banking_import_transaction(orm.Model):
 
         def bank_match(account, partner_bank):
             """
-            Compare account number with or without presence
-            of the domestic number field
+            Returns whether a given account number is equivalent to a
+            partner bank in the database. We simply call the search method,
+            which checks IBAN, domestic and disregards from spaces in IBANs.
+
+            :param account: string representation of a bank account number
+            :param partner_bank: browse record of model res.partner.bank
             """
             return partner_bank.id in self.pool['res.partner.bank'].search(
                 cr, uid, [('acc_number', '=', account)])