diff --git a/wizard/scop_period_wizard.py b/wizard/scop_period_wizard.py
index 772b06bed4ecb485710bfe52ecc1736e59cc2daf..7cf45097fe1059461302740be53222a2d4f432be 100644
--- a/wizard/scop_period_wizard.py
+++ b/wizard/scop_period_wizard.py
@@ -242,4 +242,4 @@ class ScopPeriodWizard(models.TransientModel):
             partner_values.update(values)
 
             partner = self.env['res.partner'].browse(period.partner_id)
-            partner.write(partner_values)
+            partner.sudo().write(partner_values)