diff --git a/models/membership_line.py b/models/membership_line.py
index bc362acad7b6f65afc009d2fb65c6fac7e81ef73..aa0f00e36fafa6cbef18c36610f9bd59930b999b 100644
--- a/models/membership_line.py
+++ b/models/membership_line.py
@@ -8,3 +8,9 @@ class MembershipLine(models.Model):
     _inherit = "membership.membership_line"
 
     category_id = fields.Many2one(store=True)
+    region_id = fields.Many2one(
+        comodel_name="afac.partner.region",
+        related="partner.region_id",
+        string="Région implantation",
+        store=True,
+    )