diff --git a/InvenTree/order/models.py b/InvenTree/order/models.py
index 5443a6ce9f..7f6192dfcd 100644
--- a/InvenTree/order/models.py
+++ b/InvenTree/order/models.py
@@ -826,7 +826,6 @@ class PurchaseOrderLineItem(OrderLineItem):
         unique_together = (
             ('order', 'part', 'quantity', 'purchase_price')
         )
-    
 
     @staticmethod
     def get_api_url():
@@ -834,6 +833,8 @@ class PurchaseOrderLineItem(OrderLineItem):
 
     def clean(self):
 
+        super().clean()
+
         if self.order.supplier and self.part:
             # Supplier part *must* point to the same supplier!
             if self.part.supplier != self.order.supplier: