Index: in-commerce/units/shipping_costs/shipping_costs_event_handler.php
===================================================================
--- in-commerce/units/shipping_costs/shipping_costs_event_handler.php	(revision 15331)
+++ in-commerce/units/shipping_costs/shipping_costs_event_handler.php	(working copy)
@@ -208,7 +208,7 @@
 		// by weight and US/UK system - we need to store recalculated price per Kg cause shipping calculation is done per Kg!
 		if ($shipping_obj->GetDBField('Type') == 1 && $lang_object->GetDBField('UnitSystem') == 2) {
 			$object->SetDBField('PerUnit', $object->GetDBField('PerUnit') * POUND_TO_KG);
-			$object->Update(null, true);
+			$object->Update(null, null, true);
 		}
 	}
 
@@ -224,7 +224,7 @@
 		// by weight and US/UK system - we need to store recalculated price per Kg cause shipping calculation is done per Kg!
 		if ($shipping_obj->GetDBField('Type') == 1 && $lang_object->GetDBField('UnitSystem') == 2) {
 			$object->SetDBField('PerUnit', $object->GetDBField('PerUnit') / POUND_TO_KG);
-			$object->Update(null, true);
+			$object->Update(null, null, true);
 		}
 	}
 }
\ No newline at end of file