diff --git a/product/ERP5Banking/tests/TestERP5BankingMixin.py b/product/ERP5Banking/tests/TestERP5BankingMixin.py
index 2c84a4eb0033c0712b70886a65e23e4292344a70..0e496864fa5505b4eac87a73922fd460882bf90d 100644
--- a/product/ERP5Banking/tests/TestERP5BankingMixin.py
+++ b/product/ERP5Banking/tests/TestERP5BankingMixin.py
@@ -910,7 +910,7 @@ class TestERP5BankingMixin(ERP5TypeTestCase):
     )
 
   def createCheckbookModel(self, id, check_model, reference=None,
-          unique_per_reference=True):
+          unique_per_account=True):
     """
     Create a checkbook for the given bank account
     with 3 variations
@@ -922,7 +922,7 @@ class TestERP5BankingMixin(ERP5TypeTestCase):
         account_number_enabled=True,
         reference=reference,
         composition=check_model.getRelativeUrl(),
-        unique_per_reference=unique_per_reference,
+        unique_per_account=unique_per_account,
     )
     model.newContent(id='variant_1', portal_type='Checkbook Model Check Amount Variation',
                      quantity=50, title='50')
@@ -933,7 +933,7 @@ class TestERP5BankingMixin(ERP5TypeTestCase):
     return model
 
 
-  def createCheckModel(self, id, reference='CCOP', **kw):
+  def createCheckModel(self, id, reference='CCOP', unique_per_account=True):
     """
     Create a checkbook for the given bank account
     """
@@ -943,7 +943,7 @@ class TestERP5BankingMixin(ERP5TypeTestCase):
         title='Check',
         reference=reference,
         account_number_enabled=True,
-        unique_per_reference=True,
+        unique_per_account=unique_per_account,
     )
 
   def createCheckAndCheckbookModel(self):
@@ -956,12 +956,12 @@ class TestERP5BankingMixin(ERP5TypeTestCase):
     self.check_model_1_2 = self.createCheckModel(
         id='check_model_1_2',
         reference='CCOP',
-        unique_per_reference=False,
+        unique_per_account=False,
     )
     self.check_model_2_2 = self.createCheckModel(
         id='check_model_2_2',
         reference='CCCO',
-        unique_per_reference=False,
+        unique_per_account=False,
     )
     self.checkbook_model = self.createCheckbookModel(
            id='checkbook_model', check_model=self.check_model)
@@ -971,12 +971,12 @@ class TestERP5BankingMixin(ERP5TypeTestCase):
     self.checkbook_model_1_2 = self.createCheckbookModel(
            id='checkbook_model_1_2',
            check_model=self.check_model_1_2,
-           unique_per_reference=False,
+           unique_per_account=False,
     )
     self.checkbook_model_2_2 = self.createCheckbookModel(
            id='checkbook_model_2_2',
            check_model=self.check_model_2_2,
-           unique_per_reference=False,
+           unique_per_account=False,
     )
 
   def createCheck(self, id, reference, checkbook, bank_account=None,