diff --git a/models/res_partner_contract_annex.py b/models/res_partner_contract_annex.py
index 87b4b77..6435524 100644
--- a/models/res_partner_contract_annex.py
+++ b/models/res_partner_contract_annex.py
@@ -29,7 +29,7 @@ class ContractOrderAnnex(models.Model):
         contract_number = self.contract_id.name
         annex_number = self.contract_id.contract_annex_number
 
-        self.name = "{contract}--{annex}".format(
+        self.name = "{contract}—{annex}".format(
             contract=contract_number, annex=annex_number
         )