diff --git a/models/financial_deal.py b/models/financial_deal.py
index 003a7e728dbf416dccbecbc7c89d11abc8e34ff6..7ed9eb864a4c30ed0987d0e1b1f88a7304e18218 100644
--- a/models/financial_deal.py
+++ b/models/financial_deal.py
@@ -11,6 +11,7 @@ class FinancialDeal(models.Model):
         comodel_name="financial.contract",
         inverse_name="deal_id",
         string="Contrats",
+        readonly=True,
     )
 
     # ------------------------------------------------------