diff --git a/sf_sale/models/sale_order.py b/sf_sale/models/sale_order.py
index 2958ce00..a68e9417 100644
--- a/sf_sale/models/sale_order.py
+++ b/sf_sale/models/sale_order.py
@@ -411,7 +411,7 @@ class RePurchaseOrder(models.Model):
         last_overdue_order = None
         last_warning_order = None
         for item in purchase_order:
-            current_time = datetime.now()
+            current_time = datetime.datetime.now()
             if item.date_planned <= current_time:  # 已逾期
                 item.delivery_warning = 'overdue'
                 last_overdue_order = item