diff --git a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
index 260d664..c54c2e9 100644
--- a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
+++ b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
@@ -70,8 +70,12 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
             ],
             order="date_order asc",
         )
-
-        self.date_last_order = orders[-1].effective_date.date() if orders else False
+        if orders:
+            self.date_last_order = (
+                orders[-1].effective_date.date()
+                if orders[-1].effective_date
+                else orders[-1].date_planned.date()
+            )
 
         dates = [o.date_order.date() for o in orders if o.date_order]
         if len(dates) < 2: