diff --git a/ext/custom-addons/dp_custom/models/product.py b/ext/custom-addons/dp_custom/models/product.py
index 32f02904..1d5db32c 100644
--- a/ext/custom-addons/dp_custom/models/product.py
+++ b/ext/custom-addons/dp_custom/models/product.py
@@ -80,6 +80,8 @@ class ProductTemplate(models.Model):
         vals = self.correct_values(vals)
         product_template = self.with_context(active_test=False).search([('default_code', '=', vals['default_code'])])
         if product_template:
+            # default_code may not be changed if there is already an inventory_line (in other company), so we remove it from the dict
+            vals.pop('default_code',None)
             product_template.write(vals)
         else:
             if vals['active']: