diff --git a/InvenTree/order/api.py b/InvenTree/order/api.py
index 04414e3db3..889caa7a35 100644
--- a/InvenTree/order/api.py
+++ b/InvenTree/order/api.py
@@ -593,6 +593,14 @@ class POAttachmentList(generics.ListCreateAPIView, AttachmentMixin):
     queryset = PurchaseOrderAttachment.objects.all()
     serializer_class = POAttachmentSerializer
 
+    filter_backends = [
+        DjangoFilterBackend,
+    ]
+
+    filter_fields = [
+        'order',
+    ]
+
 
 class POAttachmentDetail(generics.RetrieveUpdateDestroyAPIView, AttachmentMixin):
     """