diff --git a/addons/purchase/models/stock.py b/addons/purchase/models/stock.py
index 93b3f99a902..0b56586ccb7 100644
--- a/addons/purchase/models/stock.py
+++ b/addons/purchase/models/stock.py
@@ -128,7 +128,7 @@ class StockWarehouse(models.Model):
         res = super(StockWarehouse, self)._update_name_and_code(name, code)
         warehouse = self[0]
         #change the buy procurement rule name
-        if warehouse.buy_pull_id:
+        if warehouse.buy_pull_id and name:
             warehouse.buy_pull_id.write({'name': warehouse.buy_pull_id.name.replace(warehouse.name, name, 1)})
         return res