diff --git a/models/res_partner.py b/models/res_partner.py
index 8d48dbfc14a18e330af8ae791ffcd509fa587c24..00e5b5ea2408789a9536960d4b0bebe80db47709 100644
--- a/models/res_partner.py
+++ b/models/res_partner.py
@@ -131,7 +131,7 @@ class ScopPartner(models.Model):
         if not self.lm_adhesion_id:
             self.lm_adhesion_id = self.get_lm_adhesion()
         liasse_adhesion = self.get_liasse_adhesion(self.lm_adhesion_id)
-        year_adhesion = self.date_1st_sign.year
+        year_adhesion = self.lm_adhesion_year
         if not liasse_adhesion.year == year_adhesion:
             liasse_adhesion.update({
                 'year': year_adhesion