diff --git a/product_contract/models/sale_order_line.py b/product_contract/models/sale_order_line.py
index 402e3bb50..c841099c4 100644
--- a/product_contract/models/sale_order_line.py
+++ b/product_contract/models/sale_order_line.py
@@ -149,7 +149,7 @@ class SaleOrderLine(models.Model):
             if sol.is_auto_renew and sol.date_start:
                 sol.date_end = self.env["contract.line"]._get_first_date_end(
                     sol.date_start,
-                    sol._get_auto_renew_rule_type(),
+                    sol.auto_renew_rule_type,
                     sol.auto_renew_interval,
                 )
             else:
@@ -161,13 +161,6 @@ class SaleOrderLine(models.Model):
             recurring_rule_type, interval
         )
 
-    def _get_auto_renew_rule_type(self):
-        """monthly last day don't make sense for auto_renew_rule_type"""
-        self.ensure_one()
-        if self.auto_renew_rule_type == "monthlylastday":
-            return "monthly"
-        return self.auto_renew_rule_type
-
     @api.depends("product_id")
     def _compute_auto_renew(self):
         for rec in self.filtered("product_id.is_contract"):
diff --git a/product_contract/wizards/product_contract_configurator.py b/product_contract/wizards/product_contract_configurator.py
index fd1253454..ac13112b4 100644
--- a/product_contract/wizards/product_contract_configurator.py
+++ b/product_contract/wizards/product_contract_configurator.py
@@ -93,12 +93,5 @@ class ProductContractConfigurator(models.TransientModel):
         self.update({"date_end": False})
         for rec in self.filtered(lambda ln: ln.is_auto_renew and ln.date_start):
             rec.date_end = self.env["contract.line"]._get_first_date_end(
-                rec.date_start, rec._get_auto_renew_rule_type(), rec.auto_renew_interval
+                rec.date_start, rec.auto_renew_rule_type, rec.auto_renew_interval
             )
-
-    def _get_auto_renew_rule_type(self):
-        """monthly last day don't make sense for auto_renew_rule_type"""
-        self.ensure_one()
-        if self.auto_renew_rule_type == "monthlylastday":
-            return "monthly"
-        return self.auto_renew_rule_type