diff --git a/shipment.py b/shipment.py
index 5583da7..df54f05 100644
--- a/shipment.py
+++ b/shipment.py
@@ -414,11 +414,11 @@ class ShipmentDetailedReport(Report):
                 value['cost_w_tax'] = float(product_.cost_price_taxed) * quantity
             else:
                 value['cost_w_tax'] = None
-            if hasattr(product_, 'section'):
+            if hasattr(product_, 'section') and product_.section:
                 value['section'] = product_.section.name
             else:
                 value['section'] = None
-            if hasattr(product_, 'conservation'):
+            if hasattr(product_, 'conservation') and product_.conservation:
                 value['conservation'] = product_.conservation.name
             else:
                 value['conservation'] = None
diff --git a/shipment_detailed.fods b/shipment_detailed.fods
index 5a75650..04b7f83 100644
Binary files a/shipment_detailed.fods and b/shipment_detailed.fods differ