diff --git a/account_banking_pain_base/models/__init__.py b/account_banking_pain_base/models/__init__.py
index 5e5e13d56..af5bbf1f2 100644
--- a/account_banking_pain_base/models/__init__.py
+++ b/account_banking_pain_base/models/__init__.py
@@ -5,3 +5,4 @@ from . import account_payment_mode
 from . import res_company
 from . import res_config_settings
 from . import account_payment_method
+from . import res_bank
diff --git a/account_banking_pain_base/models/res_bank.py b/account_banking_pain_base/models/res_bank.py
new file mode 100644
index 000000000..3713735c8
--- /dev/null
+++ b/account_banking_pain_base/models/res_bank.py
@@ -0,0 +1,33 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+import re
+
+from odoo import api, models, _
+from odoo.exceptions import ValidationError
+
+BIC_REGEX = re.compile(r"[A-Z]{6}[A-Z2-9][A-NP-Z0-9]([A-Z0-9]{3})?$")
+
+
+class ResBank(models.Model):
+    _inherit = 'res.bank'
+
+    @api.multi
+    @api.constrains('bic')
+    def _check_bic(self):
+        """
+        This method strengthens the constraint on the BIC of the bank account
+        (The account_payment_order module already checks the length in the
+         check_bic_length method).
+        :raise: ValidationError if the BIC doesn't respect the regex of the
+        SEPA pain schemas.
+        """
+        invalid_banks = self.filtered(lambda r: not BIC_REGEX.match(r.bic))
+        if invalid_banks:
+            raise ValidationError(_(
+                "The following Bank Identifier Codes (BIC) do not respect "
+                "the SEPA pattern:\n{bic_list}\n\nSEPA pattern: "
+                "{sepa_pattern}").format(
+                sepa_pattern=BIC_REGEX.pattern,
+                bic_list="\n".join(invalid_banks.mapped('bic'))
+            ))