diff --git a/models/acc_contract.py b/models/acc_contract.py
index 2916168e8e0d117943d454f07cf764ba8eb7a0aa..78e8f1ec0e3328961deb3e33737f74b6094343d9 100644
--- a/models/acc_contract.py
+++ b/models/acc_contract.py
@@ -64,7 +64,9 @@ class AccContract(models.Model):
                         "acc_operation.email_template_document",
                         raise_if_not_found=False,
                     )
-                    template.with_context(operation_id=operation_id.description).send_mail(doc.seller_id.id, force_send=True)
+                    template.with_context(
+                        operation_id=operation_id.description
+                    ).send_mail(doc.seller_id.id, force_send=True)
             if doc.buyer_id:
                 user_buyer = self.env["res.users"].search(
                     [("partner_id", "=", doc.buyer_id.id)]
@@ -74,7 +76,9 @@ class AccContract(models.Model):
                         "acc_operation.email_template_document",
                         raise_if_not_found=False,
                     )
-                    template.with_context(operation_id=operation_id.description).send_mail(doc.buyer_id.id, force_send=True)
+                    template.with_context(
+                        operation_id=operation_id.description
+                    ).send_mail(doc.buyer_id.id, force_send=True)
         return docs
 
     # ------------------------------------------------------