diff --git a/contract/models/abstract_contract.py b/contract/models/abstract_contract.py
index cb951f227..f66650b63 100644
--- a/contract/models/abstract_contract.py
+++ b/contract/models/abstract_contract.py
@@ -50,17 +50,17 @@ class ContractAbstractContract(models.AbstractModel):
     )
     generation_type = fields.Selection(
         string="Generation Type",
-        selection=lambda self: self._get_generation_type_selection(),
-        default=lambda self: self._get_default_generation_type(),
+        selection=lambda self: self._selection_generation_type(),
+        default=lambda self: self._default_generation_type(),
         help="Choose the document that will be automatically generated by cron.",
     )
 
     @api.model
-    def _get_generation_type_selection(self):
+    def _selection_generation_type(self):
         return [("invoice", "Invoice")]
 
     @api.model
-    def _get_default_generation_type(self):
+    def _default_generation_type(self):
         return "invoice"
 
     @api.onchange("contract_type")