diff --git a/sf_sale/models/sale_order.py b/sf_sale/models/sale_order.py
index 1366500d..4a436fe0 100644
--- a/sf_sale/models/sale_order.py
+++ b/sf_sale/models/sale_order.py
@@ -374,12 +374,13 @@ class RePurchaseOrder(models.Model):
 
     @api.depends('partner_id')
     def _compute_user_id(self):
-        if not self.user_id:
-            if self.partner_id:
-                self.user_id = self.partner_id.purchase_user_id.id
-                # self.state = 'purchase'
-            else:
-                self.user_id = self.env.user.id
+        for item in self:
+            if not item.user_id:
+                if item.partner_id:
+                    item.user_id = item.partner_id.purchase_user_id.id
+                    # self.state = 'purchase'
+                else:
+                    item.user_id = item.env.user.id
 
     @api.constrains('order_line')
     def check_order_line(self):